{"title":"Altecnic \/ Caleffi Valves","description":"\u003cp\u003eAltecnic, part of the Caleffi Group, produce a range of valves that protect heating systems thus satisfying the needs of a wide range of industry sectors. Their valves discharge excessive pressure from a heating system when levels become potentially damaging to components.\u003c\/p\u003e","products":[{"product_id":"altecnic-caleffi-311-series-safety-relief-valve-1-2-x-1-2-f-x-f-6-bar-311460","title":"Altecnic \/ Caleffi 311 Series Safety Relief Valve 1\/2\" x 1\/2\" F x F 6 Bar - 311460","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\" data-mce-style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 311 and 312 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 1\/2\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 6 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 248.8 kg\/hr\u003cbr\u003e \u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 144.6 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 311460\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca title='Altecnic \/ Caleffi 311 Series Safety Relief Valve 1\/2\" x 1\/2\" F x F 6 bar - 311460 Datasheet' href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-6-Bar-311460.pdf?v=1699306847\" target=\"_blank\"\u003eAltecnic \/ Caleffi 311 Series Safety Relief Valve 1\/2\" x 1\/2\" F x F 6 Bar - 311460 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47302499139901,"sku":"AL-311460","price":9.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-6-Bar-311460.jpg?v=1699306876"},{"product_id":"altecnic-caleffi-311-series-safety-relief-valve-1-2-x-1-2-f-x-f-8-bar-311480","title":"Altecnic \/ Caleffi 311 Series Safety Relief Valve 1\/2\" x 1\/2\" F x F 8 Bar - 311480","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\" data-mce-style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 311 and 312 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 1\/2\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 8 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 322.7 kg\/hr\u003cbr\u003e \u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 187.5 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 311480\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca title='Altecnic \/ Caleffi 311 Series Safety Relief Valve 1\/2\" x 1\/2\" F x F 8 bar - 311480 Datasheet' href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-8-Bar-311480.pdf?v=1699306847\" target=\"_blank\"\u003eAltecnic \/ Caleffi 311 Series Safety Relief Valve 1\/2\" x 1\/2\" F x F 8 Bar - 311480 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47323961721149,"sku":"AL-311480","price":9.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-8-Bar-311480.jpg?v=1699306872"},{"product_id":"altecnic-caleffi-311-series-safety-relief-valve-1-2-x-1-2-f-x-f-3-bar-311430","title":"Altecnic \/ Caleffi 311 Series Safety Relief Valve 1\/2\" x 1\/2\" F x F 3 Bar - 311430","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 311 and 312 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 1\/2\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 3 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 142.1 kg\/hr\u003cbr\u003e \u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 82.5 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 311430\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-3-Bar-311430.pdf?v=1699306847\" title='Altecnic \/ Caleffi 311 Series Safety Relief Valve 1\/2\" x 1\/2\" F x F 3 bar - 311430 Datasheet' target=\"_blank\"\u003eAltecnic \/ Caleffi 311 Series Safety Relief Valve 1\/2\" x 1\/2\" F x F 3 Bar - 311430 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47323984036157,"sku":"AL-311430","price":8.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-3-Bar-311430.jpg?v=1699306883"},{"product_id":"altecnic-caleffi-311-series-safety-relief-valve-3-4-x-3-4-f-x-f-2-5-bar-311525","title":"Altecnic \/ Caleffi 311 Series Safety Relief Valve 3\/4\" x 3\/4\" F x F 2.5 Bar - 311525","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\" data-mce-style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 311 and 312 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 3\/4\" x 3\/4\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 2.5 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 124.4 kg\/hr\u003cbr\u003e \u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 72.3 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 311525\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-3-4-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-2.5-Bar-311525.pdf?v=1699306847\" title='Altecnic \/ Caleffi 311 Series Safety Relief Valve 3\/4\" x 3\/4\" F x F 2.5 bar - 311525 Datasheet' target=\"_blank\"\u003eAltecnic \/ Caleffi 311 Series Safety Relief Valve 3\/4\" x 3\/4\" F x F 2.5 Bar - 311525 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47323993145661,"sku":"AL-311525","price":13.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-3-4-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-2.5-Bar-311525.jpg?v=1699306866"},{"product_id":"altecnic-caleffi-311-series-safety-relief-valve-3-4-x-3-4-f-x-f-3-bar-311530","title":"Altecnic \/ Caleffi 311 Series Safety Relief Valve 3\/4\" x 3\/4\" F x F 3 Bar - 311530","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\" data-mce-style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 311 and 312 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 3\/4\" x 3\/4\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 3 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 142.1 kg\/hr\u003cbr\u003e \u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 82.5 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 311530\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-3-4-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-3-Bar-311530.pdf?v=1699306847\" title='Altecnic \/ Caleffi 311 Series Safety Relief Valve 3\/4\" x 3\/4\" F x F 3 bar - 311530 Datasheet' target=\"_blank\"\u003eAltecnic \/ Caleffi 311 Series Safety Relief Valve 3\/4\" x 3\/4\" F x F 3 Bar - 311530 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47323998748989,"sku":"AL-311530","price":13.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-3-4-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-3-Bar-311530.jpg?v=1699306862"},{"product_id":"altecnic-caleffi-311-series-safety-relief-valve-3-4-x-3-4-f-x-f-6-bar-311560","title":"Altecnic \/ Caleffi 311 Series Safety Relief Valve 3\/4\" x 3\/4\" F x F 6 Bar - 311560","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\" data-mce-style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 311 and 312 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 3\/4\" x 3\/4\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 6 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 248.8 kg\/hr\u003cbr\u003e \u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 144.6 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 311560\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-3-4-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-6-Bar-311560.pdf?v=1699306847\" title='Altecnic \/ Caleffi 311 Series Safety Relief Valve 3\/4\" x 3\/4\" F x F 6 bar - 311560 Datasheet' target=\"_blank\"\u003eAltecnic \/ Caleffi 311 Series Safety Relief Valve 3\/4\" x 3\/4\" F x F 6 Bar - 311560 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47324003860797,"sku":"AL-311560","price":13.37,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-3-4-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-6-Bar-311560.jpg?v=1699306858"},{"product_id":"altecnic-caleffi-313-series-pressure-relief-valve-with-gauge-1-2-x-1-2-f-x-f-3-bar-313430","title":"Altecnic \/ Caleffi 313 Series Pressure Relief Valve With Gauge 1\/2\" x 1\/2\" F x F 3 Bar - 313430","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\" data-mce-style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 313 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect the boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to the atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity. This valve comes supplied with a pressure gauge.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 1\/2\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 3 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 142.1 kg\/hr\u003cbr\u003e \u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 82.5 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 313430\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked, Pressure gauge included\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-F-x-F-313-Series-Pressure-Relief-Valve-With-Gauge-3-Bar-313430.pdf?v=1699650033\" title='Altecnic \/ Caleffi 311 Series Pressure Relief Valve With Gauge 1\/2\" x 1\/2\" F x F 3 bar - 313430 Datasheet' target=\"_blank\"\u003eAltecnic \/ Caleffi 313 Series Pressure Relief Valve With Gauge 1\/2\" x 1\/2\" F x F 3 Bar - 313430 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47350594568509,"sku":"AL-313430","price":18.1,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-F-x-F-313-Series-Pressure-Relief-Valve-With-Gauge-3-Bar-313430.jpg?v=1699651128"},{"product_id":"altecnic-caleffi-313-series-pressure-relief-valve-with-gauge-3-4-x-3-4-f-x-f-3-bar-313530","title":"Altecnic \/ Caleffi 313 Series - 313530 - Pressure Relief Valve With Gauge 3\/4\" x 3\/4\" F x F 3 Bar","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi Series 313 Safety Relief Valve is designed to safeguard domestic hot water systems—protecting the hot water cylinder—and heating systems by relieving excess pressure to protect the boiler and associated components. The valve is selected based on the required set pressure.\u003c\/p\u003e\n\u003cp\u003eAs system pressure rises and reaches the pre-set discharge point, the valve opens, releasing water to the atmosphere and preventing pressure from reaching hazardous levels that could compromise equipment or pose a risk to nearby personnel. Each valve is supplied with a pressure gauge for monitoring.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 3\/4\" x 3\/4\"\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e\u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 3 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 142.1 kg\/hr\u003cbr\u003e\u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 82.5 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 313530\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked, Pressure gauge included\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca title='Altecnic \/ Caleffi 313 Series Pressure Relief Valve With Gauge 3\/4\" x 3\/4\" F x F 3 bar - 313530 Datasheet' href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-3-4-Inch-F-x-F-313-Series-Pressure-Relief-Valve-With-Gauge-3-Bar-313530.pdf?v=1699650070\" target=\"_blank\"\u003eAltecnic \/ Caleffi 313 Series Pressure Relief Valve With Gauge 3\/4\" x 3\/4\" F x F 3 Bar - 313530 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47350644867389,"sku":"AL-313530","price":23.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-3-4-Inch-F-x-F-313-Series-Pressure-Relief-Valve-With-Gauge-3-Bar-313530.jpg?v=1699650629"},{"product_id":"altecnic-caleffi-313-series-pressure-relief-valve-with-gauge-3-4-x-3-4-f-x-f-6-bar-313560","title":"Altecnic \/ Caleffi 313 Series Pressure Relief Valve With Gauge 3\/4\" x 3\/4\" F x F 6 Bar - 313560","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\" data-mce-style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 313 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect the boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to the atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity. This valve comes supplied with a pressure gauge.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 3\/4\" x 3\/4\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 6 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 248.81 kg\/hr\u003cbr\u003e \u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 144.6 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 313560\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked, Pressure gauge included\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca title='Altecnic \/ Caleffi 313 Series Pressure Relief Valve With Gauge 3\/4\" x 3\/4\" F x F 6 bar - 313560 Datasheet' href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-3-4-Inch-F-x-F-313-Series-Pressure-Relief-Valve-With-Gauge-6-Bar-313560.pdf?v=1699650070\" target=\"_blank\"\u003eAltecnic \/ Caleffi 313 Series Pressure Relief Valve With Gauge 3\/4\" x 3\/4\" F x F 6 Bar - 313560 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47350663446845,"sku":"AL-313560","price":23.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-3-4-Inch-F-x-F-313-Series-Pressure-Relief-Valve-With-Gauge-6-Bar-313560.jpg?v=1699650700"},{"product_id":"altecnic-caleffi-pressure-relief-valve-3-4-loose-nut-connection-x-1-2-f-6-bar-a31150cst","title":"Altecnic \/ Caleffi Pressure Relief Valve 3\/4\" Loose Nut Connection x 1\/2\" F 6 Bar - A311501CST","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThese valves play a vital role in keeping your hot water and heating systems safe. When pressure inside your system builds up too high, the valve automatically releases it—protecting your boiler, water cylinder, and even the people nearby. Each valve is chosen based on the pressure it needs to handle, giving you peace of mind that everything’s working just as it should.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 3\/4\" x 1\/2\"\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e Loose Nut Connection Inlet x BSP Female Outlet\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e\u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 6 Barg \u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e A311501CST\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e Suitable for use with 533002 CST and 533003 CST Inlet Control Groups, MK2 Caleffi Multibloc and Range Tribune HE (Caleffi Control Gear) Cylinders.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca title='Altecnic \/ Caleffi Pressure Relief Valve 3\/4\" Loose Nut Connection x 1\/2\" F 6 Bar - A311501CST Datasheet' href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/altecnic-caleffi-3-4-loose-nut-connection-x-1-2-f-pressure-relief-valve-6-bar-a311501cst.pdf?v=1704903000\" target=\"_blank\"\u003eAltecnic \/ Caleffi Pressure Relief Valve 3\/4\" Loose Nut Connection x 1\/2\" F 6 Bar - A311501CST Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441183113533,"sku":"AL-A311501CST","price":23.63,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-15mm-Pressure-Relief-Valve-Complete-with-Loose-Nut-Connection-6-Bar-A311501CST.jpg?v=1704660967"},{"product_id":"altecnic-caleffi-253-solar-series-pressure-safety-relief-valve-1-2-x-3-4-f-x-f-6-bar-253046","title":"Altecnic \/ Caleffi 253 Solar Series Pressure Safety Relief Valve 1\/2\" x 3\/4\" F x F 6 Bar - 253046","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic series 253 safety relief valves are used to control pressure in the primary circuits of solar heating systems. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which might damage the solar collectors and other equipment installed in the system.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 3\/4\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass (Chrome Plated)\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Water, Glycol Solutions (Max. Percentage of Glycol 50%)\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 6 Barg\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e -30 to +160 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 253046\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-x-3-4-Inch-F-x-F-253-Solar-Series-Safety-Pressure-Relief-Valve-6-Bar-253046.pdf?v=1701270612\" title='Altecnic \/ Caleffi 253 Solar Series Pressure Safety Relief Valve 1\/2\" x 3\/4\" F x F 6 bar - 253046 Datasheet' target=\"_blank\"\u003eAltecnic \/ Caleffi 253 Solar Series Pressure Safety Relief Valve 1\/2\" x 3\/4\" F x F 6 Bar - 253046 Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-253-Solar-Series-Safety-Pressure-Relief-Valve-Product_Range.pdf?v=1701269196\" title=\"Altecnic \/ Caleffi 253 Solar Series Pressure Safety Relief Valve Product Range\" target=\"_blank\"\u003eAltecnic \/ Caleffi 253 Solar Series Pressure Safety Relief Valve Product Range\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441200644413,"sku":"AL-253046","price":21.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-x-3-4-Inch-F-x-F-253-Solar-Series-Safety-Pressure-Relief-Valve-6-Bar-253046.jpg?v=1701270462"},{"product_id":"altecnic-caleffi-253-solar-series-pressure-safety-relief-valve-1-2-x-3-4-f-x-f-3-bar-253043","title":"Altecnic \/ Caleffi 253 Solar Series 253043 Pressure Safety Relief Valve 1\/2\" x 3\/4\" F x F 3 Bar","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic series 253 safety relief valves are designed to regulate pressure within the primary circuits of solar heating systems. Each valve is carefully selected to match the required set pressure.\u003c\/p\u003e\n\u003cp\u003eAs system pressure builds and reaches the discharge threshold, the valve opens automatically, releasing excess pressure to the atmosphere. This action safeguards solar collectors and associated equipment from potential damage caused by overpressure.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 3\/4\"\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass (Chrome Plated)\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Water, Glycol Solutions (Max. Percentage of Glycol 50%)\u003cbr\u003e\u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 3 Barg\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e -30 to +160 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 253043\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca title='Altecnic \/ Caleffi 253 Solar Series Pressure Safety Relief Valve 1\/2\" x 3\/4\" F x F 3 bar - 253043 Datasheet' href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-x-3-4-Inch-F-x-F-253-Solar-Series-Safety-Pressure-Relief-Valve-3-Bar-253043.pdf?v=1701271231\" target=\"_blank\"\u003eAltecnic \/ Caleffi 253 Solar Series Pressure Safety Relief Valve 1\/2\" x 3\/4\" F x F 3 Bar - 253043 Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca title=\"Altecnic \/ Caleffi 253 Solar Series Pressure Safety Relief Valve Product Range\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-253-Solar-Series-Safety-Pressure-Relief-Valve-Product_Range.pdf?v=1701269196\" target=\"_blank\"\u003eAltecnic \/ Caleffi 253 Solar Series Pressure Safety Relief Valve Product Range\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441204052285,"sku":"AL-253043","price":21.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-x-3-4-Inch-F-x-F-253-Solar-Series-Safety-Pressure-Relief-Valve-3-Bar-253043.jpg?v=1701271130"},{"product_id":"altecnic-caleffi-253-solar-series-pressure-safety-relief-valve-1-2-x-3-4-f-x-f-4-bar-253044","title":"Altecnic \/ Caleffi 253 Solar Series 253044 Pressure Safety Relief Valve 1\/2\" x 3\/4\" F x F 4 Bar","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic series 253 safety relief valves are used to control pressure in the primary circuits of solar heating systems. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which might damage the solar collectors and other equipment installed in the system.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 3\/4\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass (Chrome Plated)\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Water, Glycol Solutions (Max. Percentage of Glycol 50%)\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 4 Barg\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e -30 to +160 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 253044\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca title='Altecnic \/ Caleffi 253 Solar Series Pressure Safety Relief Valve 1\/2\" x 3\/4\" F x F 4 bar - 253044 Datasheet' href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-x-3-4-Inch-F-x-F-253-Solar-Series-Safety-Pressure-Relief-Valve-4-Bar-253044.pdf?v=1701271231\" target=\"_blank\"\u003eAltecnic \/ Caleffi 253 Solar Series Pressure Safety Relief Valve 1\/2\" x 3\/4\" F x F 4 Bar - 253044 Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca title=\"Altecnic \/ Caleffi 253 Solar Series Pressure Safety Relief Valve Product Range\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-253-Solar-Series-Safety-Pressure-Relief-Valve-Product_Range.pdf?v=1701269196\" target=\"_blank\"\u003eAltecnic \/ Caleffi 253 Solar Series Pressure Safety Relief Valve Product Range\u003c\/a\u003e\u003c\/p\u003e\n\u003cbr\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441211097405,"sku":"AL-253044","price":21.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-x-3-4-Inch-F-x-F-253-Solar-Series-Safety-Pressure-Relief-Valve-4-Bar-253044.jpg?v=1701271558"},{"product_id":"altecnic-caleffi-boiler-pressure-relief-valve-1-2-pushfit-x-f-lever-top-3-bar-312408-brt","title":"Altecnic \/ Caleffi Boiler Pressure Relief Valve 1\/2\" Pushfit x F Lever Top 3 Bar - 312408 BRT","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\" data-mce-style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAltecnic \/ Caleffi safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 1\/2\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e Pushfit Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 3 Barg \u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 312408 BRT\u003cbr\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441222074685,"sku":"AL-312408-BRT","price":16.47,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Pushfit-x-F-Lever-Top-Boiler-Pressure-Relief-Valve-3-Bar-312408-BRT.jpg?v=1704662575"},{"product_id":"altecnic-caleffi-series-312-pressure-relief-valve-1-2-pushfit-x-f-3-bar-a312401cst","title":"Altecnic \/ Caleffi Series 312 Pressure Relief Valve 1\/2\" Pushfit x F 3 Bar - A312401CST","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\" data-mce-style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 311 and 312 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 1\/2\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e 1\/2\" Pushfit Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 3 Barg\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e A312401CST\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked, Pressure gauge included\u003cbr\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441229939005,"sku":"AL-A312401CST","price":15.08,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Pushfit-x-F-BSP-Series-313-Pressure-Relief-Valve-3-Bar-A312401CST.jpg?v=1704662568"},{"product_id":"altecnic-caleffi-pressure-relief-valve-with-circlip-connection-4-5-bar-f0000243","title":"Altecnic \/ Caleffi Pressure Relief Valve - F0000243 - with Circlip Connection - 4.5 Bar","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAltecnic \/ Caleffi Safety Relief Valves are designed to protect domestic hot water cylinders and heating system components—including the boiler—by relieving excess pressure. Each valve is selected to match the system’s required set pressure.\u003c\/p\u003e\n\u003cp\u003eAs pressure builds and reaches the designated discharge point, the valve opens to release pressure to atmosphere, thereby preventing potentially hazardous conditions for equipment and nearby personnel.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e\u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 4.5 Barg \u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e F0000243\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e Suitable for use with MK3 Caleffi Multibloc \u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/altecnic-caleffi-circlip-pressure-relief-valve-4-5-bar-f0000243.pdf?v=1704905526\" title=\"Altecnic \/ Caleffi Pressure Relief Valve with Circlip Connection 4.5 Bar - F0000243 Datasheet\" target=\"_blank\"\u003eAltecnic \/ Caleffi Pressure Relief Valve with Circlip Connection 4.5 Bar - F0000243 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441244815677,"sku":"AL-F0000243","price":40.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-Circlip-Pressure-Relief-Valve-4-5-Bar-F0000243.jpg?v=1704660800"},{"product_id":"altecnic-caleffi-pressure-relief-valve-with-circlip-connection-6-bar-f0000412","title":"Altecnic \/ Caleffi Pressure Relief Valve with Circlip Connection 6 Bar - F0000412","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAltecnic \/ Caleffi safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e\u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 6 Barg \u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e F0000412\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e Suitable for use with MK3 Caleffi Multibloc \u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/altecnic-caleffi-pressure-relief-valve-with-circlip-connection-6-bar-f0000412.pdf?v=1704905526\" title=\"Altecnic \/ Caleffi Pressure Relief Valve with Circlip Connection 6 Bar - F0000412 Datasheet\" target=\"_blank\"\u003eAltecnic \/ Caleffi Pressure Relief Valve with Circlip Connection 6 Bar - F0000412 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441248813373,"sku":"AL-F0000412","price":40.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-Pressure-Relief-Valve-with-Circlip-Connection-6-Bar-F0000412_1.jpg?v=1704660919"},{"product_id":"altecnic-caleffi-pressure-relief-valve-with-circlip-connection-8-bar-f0000483","title":"Altecnic \/ Caleffi Pressure Relief Valve with Circlip Connection 8 Bar - F0000483","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAltecnic \/ Caleffi safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e\u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 8 Barg \u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e F0000483\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e Suitable for use with MK3 Caleffi Multibloc \u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/altecnic-caleffi-pressure-relief-valve-with-circlip-connection-8-bar-f0000483.pdf?v=1704905526\" title=\"Altecnic \/ Caleffi Pressure Relief Valve with Circlip Connection 8 Bar - F0000483 Datasheet\" target=\"_blank\"\u003eAltecnic \/ Caleffi Pressure Relief Valve with Circlip Connection 8 Bar - F0000483 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441251303741,"sku":"AL-F0000483","price":40.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-Pressure-Relief-Valve-with-Circlip-Connection-8-Bar-F0000483.jpg?v=1704660928"},{"product_id":"altecnic-caleffi-pressure-relief-valve-1-2-pushfit-o-ring-x-f-6-bar-312007cst","title":"Altecnic \/ Caleffi Pressure Relief Valve 1\/2\" Pushfit O-Ring x F 6 Bar - 312007CST","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\" data-mce-style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAltecnic \/ Caleffi safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 1\/2\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e Pushfit Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 6 Barg \u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 312007CST\u003cbr\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441255891261,"sku":"AL-312007CST","price":12.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-O-Ring-Pressure-Relief-Valve-6-Bar-312007CST.jpg?v=1704664704"},{"product_id":"altecnic-caleffi-314-series-pressure-relief-valve-with-gauge-port-1-2-m-x-15mm-3-bar-a314437cst","title":"Altecnic \/ Caleffi 314 Series Pressure Relief Valve with Gauge Port 1\/2\" M x 15mm 3 Bar - A314437CST","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe safety relief valve 314 series is used in heating systems, in domestic water systems to protect the hot water storage and in hydraulic systems. The 314 series safety relief valves is made by Caleffi S.p.A. in compliance with the essential safety requirements laid down by Directive 97\/23\/CE of the European Parliament and the Council of the European Union for harmonisation of member States with regard to pressurised equipment.\u003c\/p\u003e\n\u003cp\u003eSafety relief valves are typically used for pressure control on heat generators in heating systems, on hot water storage units in hydraulic and domestic water systems, and in hydraulic systems. On reaching the setting pressure, the valve opens and, by discharging, prevents the pressure in the system from reaching dangerous levels for the generator and for the components installed in the system.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 15mm\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Male Inlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 3 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 142.1 kg\/hr\u003cbr\u003e \u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 82.5 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e A314437CST\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca title=\"Altecnic \/ Caleffi 314 Series Pressure Relief Valve with Gauge Port 1\/2 M x 15mm 3 Bar - A314437CST Datasheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-M-x-15mm-314-Series-Pressure-Relief-Valve-with-Gauge-Port-3-Bar-A314437CST.pdf?v=1704882909\" target=\"_blank\"\u003eAltecnic \/ Caleffi 314 Series Pressure Relief Valve with Gauge Port 1\/2\" M x 15mm 3 Bar - A314437CST Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441259299133,"sku":"AL-A314437CST","price":12.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-M-x-15mm-314-Series-Pressure-Relief-Valve-with-Gauge-Port-3-Bar-A314437CST.jpg?v=1704664637"},{"product_id":"altecnic-caleffi-pressure-relief-valve-with-circlip-connection-stainless-steel-seating-15mm-6-bar-f0000419","title":"Altecnic \/ Caleffi Pressure Relief Valve with Circlip Connection Stainless Steel Seating 15mm 6 Bar - F0000419","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAltecnic \/ Caleffi safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e\u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 6 Barg \u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e F0000419\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e Suitable for use with MK3 Caleffi Multibloc \u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/altecnic-caleffi-15mm-pressure-relief-valve-with-circlip-connection-stainless-steel-seating-6-bar-f0000419.pdf?v=1704905526\" title=\"Altecnic \/ Caleffi Pressure Relief Valve with Circlip Connection Stainless Steel Seating 15mm 6 Bar - F0000419 Datasheet\" target=\"_blank\"\u003eAltecnic \/ Caleffi Pressure Relief Valve with Circlip Connection Stainless Steel Seating 15mm 6 Bar - F0000419 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441262838077,"sku":"AL-F0000419","price":40.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-15mm-Pressure-Relief-Valve-with-Circlip-Connection-Stainless-Steel-Seating-6-Bar-F0000419_1.jpg?v=1704664692"},{"product_id":"altecnic-caleffi-pressure-relief-valve-loose-nut-connection-4-5-bar-f0000242","title":"Altecnic \/ Caleffi Pressure Relief Valve Loose Nut Connection 4.5 Bar - F0000242","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAltecnic \/ Caleffi safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eConnections: \u003c\/strong\u003eLoose Nut Inlet\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e\u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 4.5 Barg \u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e F0000242\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e Suitable for use with MK2 Caleffi Multibloc \u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/altecnic-caleffi-loose-nut-pressure-relief-valve-4-5-bar-f0000242.pdf?v=1704905526\" title=\"Altecnic \/ Caleffi Pressure Relief Valve Loose Nut Connection 4.5 Bar - F0000242 Datasheet\" target=\"_blank\"\u003eAltecnic \/ Caleffi Pressure Relief Valve Loose Nut Connection 4.5 Bar - F0000242 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441267097917,"sku":"AL-F0000242","price":40.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-Loose-Nut-Pressure-Relief-4-5-Bar-F0000242_1.jpg?v=1704664697"},{"product_id":"altecnic-caleffi-pressure-relief-valve-3-4-loose-nut-connection-x-1-2-f-6-bar-f0000992","title":"Altecnic \/ Caleffi Pressure Relief Valve 3\/4\" Loose Nut Connection x 1\/2\" F 6 Bar - F0000992","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eEngineered for domestic hot water and heating systems, these precision relief valves safeguard cylinders, boilers, and system components by venting excess pressure. Each valve is calibrated to a specific set pressure—once reached, it releases safely to atmosphere, helping prevent damage, system failure, and potential hazards to nearby personnel. A trusted choice for maintaining safe pressure levels with reliability and ease.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 3\/4\" x 1\/2\"\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e Loose Nut Connection Inlet x BSP Female Outlet\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e\u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 6 Barg \u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e F0000992\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e Suitable for use with 533002 CST and 533003 CST Inlet Control Groups, MK2 Caleffi Multibloc and Range Tribune HE (Caleffi Control Gear) Cylinders.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca title='Altecnic \/ Caleffi Pressure Relief Valve 3\/4\" Loose Nut Connection x 1\/2\" F 6 Bar - F0000992 Datasheet' href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/altecnic-caleffi-3-4-loose-nut-connection-x-1-2-f-pressure-relief-valve-6-bar-f0000992.pdf?v=1704903001\" target=\"_blank\"\u003eAltecnic \/ Caleffi Pressure Relief Valve 3\/4\" Loose Nut Connection x 1\/2\" F 6 Bar - F0000992 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441270505789,"sku":"AL-F0000992","price":40.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-Loose-Nut-Pressure-Relief-Valve-6-Bar-F0000992.jpg?v=1717769204"},{"product_id":"altecnic-caleffi-pressure-relief-valve-with-circlip-connection-4-5-bar-f0000477","title":"Altecnic \/ Caleffi Pressure Relief Valve with Circlip Connection 4.5 Bar - F0000477","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAltecnic \/ Caleffi safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e\u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 4.5 Barg \u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e F0000477\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e Suitable for use with MK3 Caleffi Multibloc \u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/altecnic-caleffi-pressure-relief-valve-with-circlip-connection-6-bar-f0000477.pdf?v=1704905526\" title=\"Altecnic \/ Caleffi Pressure Relief Valve with Circlip Connection 4.5 Bar - F0000477 Datasheet\" target=\"_blank\"\u003eAltecnic \/ Caleffi Pressure Relief Valve with Circlip Connection 4.5 Bar - F0000477 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441302847805,"sku":"AL-F0000477","price":40.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-Pressure-Relief-Valve-with-Circlip-Connection-4-5-Bar-F0000477.jpg?v=1704661717"},{"product_id":"altecnic-caleffi-312-series-pressure-relief-valve-1-2-x-1-2-m-x-f-6-bar-312460cst","title":"Altecnic \/ Caleffi 312 Series Safety Relief Valve 1\/2\" x 1\/2\" M x F 6 Bar - 312460CST","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 311 and 312 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 1\/2\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Male Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 6 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 248.8 kg\/hr\u003cbr\u003e \u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 144.6 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 312460CST\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca title='Altecnic \/ Caleffi 312 Series Safety Relief Valve 1\/2\" x 1\/2\" M x F 6 bar - 312460CST Datasheet' href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-M-x-F-312-Series-Safety-Pressure-Relief-Valve-6-Bar-312460CST.pdf?v=1701250852\" target=\"_blank\"\u003eAltecnic \/ Caleffi 312 Series Safety Relief Valve 1\/2\" x 1\/2\" M x F 6 Bar - 312460CST Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441379623229,"sku":"AL-312460CST","price":7.18,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-M-x-F-312-Series-Safety-Pressure-Relief-Valve-6-Bar-312460CST.jpg?v=1701274184"},{"product_id":"altecnic-caleffi-312-series-safety-relief-valve-1-2-x-1-2-m-x-f-3-bar-312430","title":"Altecnic \/ Caleffi 312 Series Safety Relief Valve 1\/2\" x 1\/2\" M x F 3 Bar - 312430","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 311 and 312 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 1\/2\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Male Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 3 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 142.1 kg\/hr\u003cbr\u003e \u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 82.5 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 312430\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-M-x-F-312-Series-Safety-Pressure-Relief-Valve-3-Bar-312430.pdf?v=1701250855\" title='Altecnic \/ Caleffi 312 Series Safety Relief Valve 1\/2\" x 1\/2\" M x F 3 bar - 312430 Datasheet' target=\"_blank\"\u003eAltecnic \/ Caleffi 312 Series Safety Relief Valve 1\/2\" x 1\/2\" M x F 3 Bar - 312430 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441389650237,"sku":"AL-312430","price":9.41,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-M-x-F-312-Series-Safety-Pressure-Relief-Valve-3-Bar-312430.jpg?v=1701274176"},{"product_id":"altecnic-caleffi-314-series-safety-relief-valve-with-gauge-1-2-x-1-2-m-x-f-3-bar-314430","title":"Altecnic \/ Caleffi 314 Series Safety Pressure Relief Valve with Gauge 1\/2\" x 1\/2\" M x F 3 Bar - 314430","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi standard safety relief valve 314 series is used in heating systems, in domestic water systems to protect the hot water storage, and in hydraulic systems.\u003cbr\u003e\u003cbr\u003eSafety relief valves are typically used for pressure control on heat generators in heating systems, on hot water storage units in hydraulic and domestic water systems, and in hydraulic systems. On reaching the setting pressure, the valve opens and, by discharging into the atmosphere, prevents the pressure in the system from reaching dangerous levels for the generator and for the components installed in the system.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 1\/2\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Male Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 3 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 142.17 kg\/hr\u003cbr\u003e \u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 82.5 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 314430\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked, Pressure gauge included\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca title='Altecnic \/ Caleffi 314 Series Safety Pressure Relief Valve with Gauge 1\/2\" x 1\/2\" M x F 3 bar - 314430 Datasheet' href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-M-x-F-314-Series-Safety-Pressure-Relief-Valve-With-Gauge-3-Bar-314430.pdf?v=1701277353\" target=\"_blank\"\u003eAltecnic \/ Caleffi 314 Series Safety Pressure Relief Valve with Gauge 1\/2\" x 1\/2\" M x F 3 Bar - 314430 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441392468285,"sku":"AL-314430","price":18.13,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-M-x-F-314-Series-Safety-Pressure-Relief-Valve-with-Gauge-3-Bar-314430.jpg?v=1701274473"},{"product_id":"altecnic-caleffi-312-series-safety-pressure-relief-valve-1-2-m-x-15-mm-4-bar-312405cst","title":"Altecnic \/ Caleffi 312 Series Safety Pressure Relief Valve 1\/2\" M x 15mm 4 Bar - 312405CST","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 311 and 312 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 15mm\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Male Inlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 4 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 178.2 kg\/hr\u003cbr\u003e \u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 103.3 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 312405CST\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca title=\"Altecnic \/ Caleffi 1\/2 M x F 312 Series Safety Pressure Relief Valve 4 Bar - 312405CST\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-M-x-15mm-312-Series-Safety-Pressure-Relief-Valve-4-Bar-312405CST.pdf?v=1704882925\" target=\"_blank\"\u003eAltecnic \/ Caleffi 1\/2\" M x F 312 Series Safety Pressure Relief Valve 4 Bar - 312405CST Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47441399185725,"sku":"AL-312405CST","price":13.19,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-M-x-F-312-Series-Safety-Pressure-Relief-Valve-4-Bar-312405CST.jpg?v=1704662583"},{"product_id":"altecnic-caleffi-312-series-safety-relief-valve-1-2-x-1-2-m-x-f-2-5-bar-312425","title":"Altecnic \/ Caleffi 312 Series Safety Relief Valve 1\/2\" x 1\/2\" M x F 2.5 Bar - 312425","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 311 and 312 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 1\/2\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Male Inlet x BSP Female Outlet\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 2.5 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 124.4 kg\/hr\u003cbr\u003e \u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 72.3 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 312425\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca title='Altecnic \/ Caleffi 312 Series Safety Relief Valve 1\/2\" x 1\/2\" M x F 2.5 bar - 312425 Datasheet' href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-M-x-F-312-Series-Safety-Pressure-Relief-Valve-2.5-Bar-312425.pdf?v=1701250855\" target=\"_blank\"\u003eAltecnic \/ Caleffi 312 Series Safety Relief Valve 1\/2\" x 1\/2\" M x F 2.5 Bar - 312425 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47457471332669,"sku":"AL-312425","price":9.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-1-2-Inch-M-x-F-312-Series-Safety-Pressure-Relief-Valve-2.5-Bar-312425.jpg?v=1701274165"},{"product_id":"altecnic-caleffi-309-series-pressure-temperature-relief-valve-1-2-90-deg-c-7-bar-309473cst","title":"Altecnic \/ Caleffi 309 Series Pressure \u0026 Temperature Relief Valve 1\/2\" 90°C 7 Bar - 309473CST","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi Series 309 Temperature \u0026amp; Pressure Relief Valve is designed to regulate and limit the temperature and pressure within domestic hot water storage heaters. It prevents the water from exceeding 100°C and forming steam. When the pre-set limits are reached, the valve safely discharges water into the atmosphere to restore pressure and temperature within the system’s operational parameters.\u003c\/p\u003e\n\u003cp\u003eThe valve opens the outlet on reaching the settings for:\u003cbr\u003e\u003cbr\u003e- \u003cstrong\u003eTemperature:\u003c\/strong\u003e the thermostat compound inside the temperature sensor 1) submerged in the hot water storage heater, expands as the temperature increases. This expansion causes a thrust pin to move and act on the obturator 2) opening the valve. The valve is set to open at temperatures of over 90°C.\u003cbr\u003e\u003cbr\u003e- \u003cstrong\u003ePressure\u003c\/strong\u003e: the obturator, opposed by a set spring, raises on reaching the pressure setting and opens the outlet completely. The pressure setting is chosen according to the maximum permissible pressure in the system.\u003cbr\u003e\u003cbr\u003eAs the temperature and pressure drop, the valve performs the reverse action, re-closing automatically once conditions return within the specified tolerances.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\"\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e Male x Ø 15 mm with compression fitting for copper pipe\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e DZR\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Water\u003cbr\u003e\u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 7 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Rating:\u003c\/strong\u003e 10 kW\u003cbr\u003e\u003cstrong\u003eTemperature Setting:\u003c\/strong\u003e 90 degC\u003cbr\u003e\u003cstrong\u003eProbe Length:\u003c\/strong\u003e 97mm\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 309473CST\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-Pressure-Temperature-Relief-Valve-1-2-Inch-90DegC-7-Bar-309473CST-Datasheet.pdf?v=1708084685\" title='Altecnic \/ Caleffi 309 Series Pressure and Temperature Relief Valve 1\/2\" 90°C 7 Bar - 309473CST Datasheet' target=\"_blank\"\u003eAltecnic \/ Caleffi 309 Series Pressure and Temperature Relief Valve 1\/2\" 90°C 7 Bar - 309473CST Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47883968610621,"sku":"AL-309473CST","price":28.54,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-Pressure-Temperature-Relief-Valve-1-2-Inch-90DegC-7-Bar-309473CST.jpg?v=1708082203"},{"product_id":"altecnic-caleffi-309-series-pressure-temperature-relief-valve-1-2-90-deg-c-10-bar-309400cst","title":"Altecnic \/ Caleffi 309 Series - 309400CST - Pressure \u0026 Temperature Relief Valve 1\/2\" 90°C 10 Bar","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 309 temperature \u0026amp; pressure relief valve controls and limits the temperature and pressure of the hot water contained in a domestic storage heater and prevents it from being able to reach temperatures of over 100°C, with the formation of steam. On reaching the settings, the valve discharges a sufficient amount of water into the atmosphere so that the temperature and pressure return within the system’s operating limits.\u003c\/p\u003e\n\u003cp\u003eThe valve opens the outlet on reaching the settings for:\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e- \u003cstrong\u003eTemperature:\u003c\/strong\u003e the thermostat compound inside the temperature sensor 1) submerged in the hot water storage heater, expands as the temperature increases. This expansion causes a thrust pin to move and act on the obturator 2) opening the valve. The valve is set to open at temperatures of over 90°C.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e- \u003cstrong\u003ePressure\u003c\/strong\u003e: the obturator, opposed by a set spring, raises on reaching the pressure setting and opens the outlet completely. The pressure setting is chosen according to the maximum permissible pressure in the system.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eAs the temperature and pressure decrease, the opposite action occurs, with the valve subsequently re-closing within the set tolerances.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\"\u003cbr\u003e \u003cstrong\u003eConnections:\u003c\/strong\u003e Male x Ø 15 mm with compression fitting for copper pipe\u003cbr\u003e \u003cstrong\u003eMaterials:\u003c\/strong\u003e DZR\u003cbr\u003e \u003cstrong\u003eMedium:\u003c\/strong\u003e Water\u003cbr\u003e \u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 10 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Rating:\u003c\/strong\u003e 10 kW\u003cbr\u003e\u003cstrong\u003eTemperature Setting:\u003c\/strong\u003e 90 degC\u003cbr\u003e\u003cstrong\u003eProbe Length:\u003c\/strong\u003e 102mm\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 309400CST\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-Pressure-Temperature-Relief-Valve-1-2-Inch-90DegC-10-Bar-309400CST-Datasheet.pdf?v=1708084685\" title='Altecnic \/ Caleffi 309 Series Pressure and Temperature Relief Valve 1\/2\" 90°C 10 Bar - 309400CST Datasheet' target=\"_blank\"\u003eAltecnic \/ Caleffi 309 Series Pressure and Temperature Relief Valve 1\/2\" 90°C 10 Bar - 309400CST Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47883996201277,"sku":"AL-309400CST","price":27.82,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-Pressure-Temperature-Relief-Valve-1-2-Inch-90DegC-10-Bar-309400CST.jpg?v=1708082499"},{"product_id":"altecnic-caleffi-309-series-pressure-temperature-relief-valve-3-4-90-deg-c-10-bar-309500cst","title":"Altecnic \/ Caleffi 309 Series Pressure \u0026 Temperature Relief Valve 3\/4\" 90°C 10 Bar - 309500CST","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 309 temperature \u0026amp; pressure relief valve controls and limits the temperature and pressure of the hot water contained in a domestic storage heater and prevents it from being able to reach temperatures of over 100°C, with the formation of steam. On reaching the settings, the valve discharges a sufficient amount of water into the atmosphere so that the temperature and pressure return within the system’s operating limits.\u003c\/p\u003e\n\u003cp\u003eThe valve opens the outlet on reaching the settings for:\u003cbr\u003e\u003cbr\u003e- \u003cstrong\u003eTemperature:\u003c\/strong\u003e as the water temperature rises, the thermostat compound within the temperature sensor—submerged in the hot water storage heater—expands. This expansion drives a thrust pin that acts on the obturator, triggering the valve to open. The valve is calibrated to activate at temperatures exceeding 90°C.\u003cbr\u003e\u003cbr\u003e- \u003cstrong\u003ePressure\u003c\/strong\u003e: counteracted by a pre-set spring, the obturator lifts upon reaching the defined pressure threshold, fully opening the outlet. This pressure setting is selected based on the system’s maximum allowable pressure.\u003cbr\u003e\u003cbr\u003eAs the temperature and pressure decrease, the opposite action occurs, with the valve subsequently re-closing within the set tolerances.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 3\/4\"\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e Male x Ø 22 mm with compression fitting for copper pipe\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e DZR\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Water\u003cbr\u003e\u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 10 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Rating:\u003c\/strong\u003e 25 kW\u003cbr\u003e\u003cstrong\u003eTemperature Setting:\u003c\/strong\u003e 90 degC\u003cbr\u003e\u003cstrong\u003eProbe Length:\u003c\/strong\u003e 99mm\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 309500CST\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-Pressure-Temperature-Relief-Valve-3-4-Inch-90DegC-10-Bar-309500CST-Datasheet.pdf?v=1708084686\" title='Altecnic \/ Caleffi 309 Series Pressure and Temperature Relief Valve 3\/4\" 90°C 10 Bar - 309500CST Datasheet' target=\"_blank\"\u003eAltecnic \/ Caleffi 309 Series Pressure and Temperature Relief Valve 3\/4 90°C 10 Bar - 309500CST Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47884009242941,"sku":"AL-309500CST","price":29.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-Pressure-Temperature-Relief-Valve-3-4-Inch-90DegC-10-Bar-309500CST.jpg?v=1708082855"},{"product_id":"altecnic-caleffi-309-series-pressure-temperature-relief-valve-3-4-90-deg-c-7-bar-309570cst","title":"Altecnic \/ Caleffi 309 Series - 309570CST - Pressure \u0026 Temperature Relief Valve 3\/4\" 90°C 7 Bar","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"color: #ff0000;\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 309 temperature \u0026amp; pressure relief valve controls and limits the temperature and pressure of the hot water contained in a domestic storage heater and prevents it from being able to reach temperatures of over 100°C, with the formation of steam. On reaching the settings, the valve discharges a sufficient amount of water into the atmosphere so that the temperature and pressure return within the system’s operating limits.\u003c\/p\u003e\n\u003cp\u003eThe valve opens the outlet on reaching the settings for:\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e- \u003cstrong\u003eTemperature:\u003c\/strong\u003e the thermostat compound inside the temperature sensor 1) submerged in the hot water storage heater, expands as the temperature increases. This expansion causes a thrust pin to move and act on the obturator 2) opening the valve. The valve is set to open at temperatures of over 90°C.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e- \u003cstrong\u003ePressure\u003c\/strong\u003e: the obturator, opposed by a set spring, raises on reaching the pressure setting and opens the outlet completely. The pressure setting is chosen according to the maximum permissible pressure in the system.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eAs the temperature and pressure decrease, the opposite action occurs, with the valve subsequently re-closing within the set tolerances.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 3\/4\"\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e Male x Ø 22 mm with compression fitting for copper pipe\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e DZR\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Water\u003cbr\u003e\u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 7 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Rating:\u003c\/strong\u003e 25 kW\u003cbr\u003e\u003cstrong\u003eTemperature Setting:\u003c\/strong\u003e 90 degC\u003cbr\u003e\u003cstrong\u003eProbe Length:\u003c\/strong\u003e 99mm\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 309570CST\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca title='Altecnic \/ Caleffi 309 Series Pressure and Temperature Relief Valve 3\/4\" 90°C 7 Bar - 309570CST Datasheet' href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-Pressure-Temperature-Relief-Valve-3-4-Inch-90DegC-7-Bar-309570CST-Datasheet.pdf?v=1708084685\" target=\"_blank\"\u003eAltecnic \/ Caleffi 309 Series Pressure and Temperature Relief Valve 3\/4\" 90°C 7 Bar - 309570CST Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":47884015698237,"sku":"AL-309570CST","price":32.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-Pressure-Temperature-Relief-Valve-3-4-Inch-90DegC-7-Bar-309570CST.jpg?v=1708083566"},{"product_id":"altecnic-caleffi-527-series-safety-relief-valve-3-4-x-1-f-x-f-6-bar-527560est","title":"Altecnic \/ Caleffi 527 Series Safety Relief Valve 3\/4\" x 1\" F x F 6 Bar - 527560EST","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"color: #ff0000;\" data-mce-style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 527 safety relief valves are typically used for pressure control on heat generators in heating systems, on hot water storage units in hydraulic and domestic water systems, and in hydraulic systems. On reaching the setting pressure, the valve opens and, by discharging into the atmosphere, prevents the pressure in the system from reaching dangerous levels for the generator and for the components installed in the system.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e527 EST series valves are fail-safe devices, i.e. they are guaranteed to operate even in the case of wear or breakage of the diaphragm.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 3\/4\" x 1\"\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e\u003cstrong\u003eSet Pressure: \u003c\/strong\u003e6 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 728.61 kg\/hr\u003cbr\u003e\u003cstrong\u003eMax Generator Potential:\u003c\/strong\u003e 423.6 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 527560 EST\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/altecnic-caleffi-527-series-safety-relief-valve-3-4-x-1-f-x-f-6-bar-527560est-datasheet.pdf?v=1729171827\" title='Altecnic \/ Caleffi 527 Series Safety Relief Valve 3\/4\" x 1\" F x F 6 Bar - 527560EST Datasheet' target=\"_blank\"\u003eAltecnic \/ Caleffi 527 Series Safety Relief Valve 3\/4\" x 1\" F x F 6 Bar - 527560EST Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":53595883274620,"sku":"AL-527560EST","price":76.14,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/altecnic-caleffi-527-series-safety-relief-valve-3-4-x-1-f-x-f-6-bar-527560est.png?v=1729170936"},{"product_id":"altecnic-caleffi-311-series-safety-relief-valve-3-4-x-3-4-f-x-f-5-bar-311550","title":"Altecnic \/ Caleffi 311 Series Safety Relief Valve 3\/4\" x 3\/4\" F x F 5 Bar - 311550","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 311 and 312 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 3\/4\" x 3\/4\"\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e\u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 5 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 213.26 kg\/hr\u003cbr\u003e\u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 123.6 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 311550\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-3-4-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-5-Bar-311550.pdf?v=1763735059\" title='Altecnic \/ Caleffi 311 Series Safety Relief Valve 3\/4\" x 3\/4\" F x F 5 bar - 311550 Datasheet' rel=\"noopener\" target=\"_blank\"\u003eAltecnic \/ Caleffi 311 Series Safety Relief Valve 3\/4\" x 3\/4\" F x F 5 Bar - 311550 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":55998620565884,"sku":"AL-311550","price":13.37,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-3-4-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-6-Bar-311560.jpg?v=1699306858"},{"product_id":"altecnic-caleffi-527-series-safety-relief-valve-1-1-4-x-1-1-2-f-x-f-6-bar-527760est","title":"Altecnic \/ Caleffi 527 Series Safety Relief Valve 1.1\/4\" x 1.1\/2\" F x F 6 Bar - 527760EST","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 527 safety relief valves are typically used for pressure control on heat generators in heating systems, on hot water storage units in hydraulic and domestic water systems, and in hydraulic systems. On reaching the setting pressure, the valve opens and, by discharging into the atmosphere, prevents the pressure in the system from reaching dangerous levels for the generator and for the components installed in the system.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e527 EST series valves are fail-safe devices, i.e. they are guaranteed to operate even in the case of wear or breakage of the diaphragm.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 1.1\/4\" x 1.1\/2\"\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e\u003cstrong\u003eSet Pressure: \u003c\/strong\u003e6 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 2060.11 kg\/hr\u003cbr\u003e\u003cstrong\u003eMax Generator Potential:\u003c\/strong\u003e 1197.9 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 527760 EST\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/altecnic-caleffi-527-series-safety-relief-valve-1-1-4-x-1-1-2-f-x-f-6-bar-527760est-datasheet.pdf?v=1770911099\" title='Altecnic \/ Caleffi 527 Series Safety Relief Valve 1.1\/4\" x 1.1\/2\" F x F 6 Bar - 527760EST Datasheet' target=\"_blank\"\u003eAltecnic \/ Caleffi 527 Series Safety Relief Valve 1.1\/4\" x 1.1\/2\" F x F 6 Bar - 527760EST Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":56357804081532,"sku":"AL-527760EST","price":195.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_527760EST_Safety_Valve.png?v=1770910748"},{"product_id":"altecnic-caleffi-533-series-prescal-15mm-high-temp-pressure-reducing-valve-533641h","title":"Altecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve 533641H","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRESCAL - SERIES 533 HIGH TEMPERATURE PRESSURE REDUCING VALVE WITH COMPRESSION ENDS (NO GAUGE PORT)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe series 533 high performance range of pressure reducing valves is designed for domestic and semi-commercial applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures and benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- Max inlet pressure: 16 bar\u003cbr\u003e- Max temperature: 80°C\u003cbr\u003e- Outlet adj range: 1 - 5.5 bar\u003cbr\u003e- EN 1567 approved\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 15mm\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e Compression\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e DZR chrome plated\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Potable water\u003cbr\u003e\u003cstrong\u003eMax Inlet Pressure:\u003c\/strong\u003e 16 Barg \u003cbr\u003e\u003cstrong\u003eOutlet Pressure Setting Range:\u003c\/strong\u003e 1 to 5.5 Barg\u003cbr\u003e\u003cstrong\u003eMax Temperature:\u003c\/strong\u003e +80 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 533641H\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, No gauge port\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Altecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve 533641H Datasheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_533H_High_Temp_Pressure_Reducing_Valve_Datasheet.pdf?v=1770990656\" target=\"_blank\"\u003eAltecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve 533641H Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Altecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve 533641H Installation Guide\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_533H_High_Temp_Pressure_Reducing_Valve_Installation_Guide.pdf?v=1770990656\" target=\"_blank\"\u003eAltecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve 533641H Installation Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":56361498870140,"sku":"AL-533641H","price":40.59,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_15mm_Prescal_Series_533_High_Temp_Pressure_Reducing_Valve_533641H.jpg?v=1770988535"},{"product_id":"altecnic-caleffi-533-series-prescal-22mm-high-temp-pressure-reducing-valve-533651h","title":"Altecnic Caleffi 22mm Prescal Series 533 High Temp Pressure Reducing Valve 533651H","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRESCAL - SERIES 533 HIGH TEMPERATURE PRESSURE REDUCING VALVE WITH COMPRESSION ENDS (NO GAUGE PORT)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe series 533 high performance range of pressure reducing valves is designed for domestic and semi-commercial applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures and benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- Max inlet pressure: 16 bar\u003cbr\u003e- Max temperature: 80°C\u003cbr\u003e- Outlet adj range: 1 - 5.5 bar\u003cbr\u003e- Pressure gauge connection: G¼˝\u003cbr\u003e- EN 1567 approved\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 22mm\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e Compression\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e DZR chrome plated\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Potable water\u003cbr\u003e\u003cstrong\u003eMax Inlet Pressure:\u003c\/strong\u003e 16 Barg \u003cbr\u003e\u003cstrong\u003eOutlet Pressure Setting Range:\u003c\/strong\u003e 1 to 5.5 Barg\u003cbr\u003e\u003cstrong\u003eMax Temperature:\u003c\/strong\u003e +80 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 533651H\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, No gauge port\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Altecnic Caleffi 22mm Prescal Series 533 High Temp Pressure Reducing Valve 533651H Datasheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_533H_High_Temp_Pressure_Reducing_Valve_Datasheet.pdf?v=1770990656\" target=\"_blank\"\u003eAltecnic Caleffi 22mm Prescal Series 533 High Temp Pressure Reducing Valve 533651H Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Altecnic Caleffi 22mm Prescal Series 533 High Temp Pressure Reducing Valve 533651H Installation Guide\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_533H_High_Temp_Pressure_Reducing_Valve_Installation_Guide.pdf?v=1770990656\" target=\"_blank\"\u003eAltecnic Caleffi 22mm Prescal Series 533 High Temp Pressure Reducing Valve 533651H Installation Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":56361498968444,"sku":"AL-533651H","price":43.47,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_15mm_Prescal_Series_533_High_Temp_Pressure_Reducing_Valve_533651H.jpg?v=1770988579"},{"product_id":"altecnic-caleffi-533-series-prescal-15mm-high-temp-pressure-reducing-valve-with-gauge-port-533741h","title":"Altecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve with Gauge Port 533741H","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRESCAL - SERIES 533 HIGH TEMPERATURE PRESSURE REDUCING VALVE WITH COMPRESSION ENDS (WITH GAUGE PORT)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe series 533 high performance range of pressure reducing valves is designed for domestic and semi-commercial applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures and benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- Max inlet pressure: 16 bar\u003cbr\u003e- Max temperature: 80°C\u003cbr\u003e- Outlet adj range: 1 - 5.5 bar\u003cbr\u003e- Pressure gauge connection: G¼˝\u003cbr\u003e- EN 1567 approved\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 15mm\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e Compression\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e DZR chrome plated\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Potable water\u003cbr\u003e\u003cstrong\u003eMax Inlet Pressure:\u003c\/strong\u003e 16 Barg \u003cbr\u003e\u003cstrong\u003eOutlet Pressure Setting Range:\u003c\/strong\u003e 1 to 5.5 Barg\u003cbr\u003e\u003cstrong\u003eMax Temperature:\u003c\/strong\u003e +80 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 533741H\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, With gauge port\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Altecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve 533741H Datasheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_533H_High_Temp_Pressure_Reducing_Valve_Datasheet.pdf?v=1770990656\" target=\"_blank\"\u003eAltecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve 533741H Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Altecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve 533741H Installation Guide\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_533H_High_Temp_Pressure_Reducing_Valve_Installation_Guide.pdf?v=1770990656\" target=\"_blank\"\u003eAltecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve 533741H Installation Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":56361499361660,"sku":"AL-533741H","price":41.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_15mm_Prescal_Series_533_High_Temp_Pressure_Reducing_Valve_with_Gauge_Port_533741H.jpg?v=1770988693"},{"product_id":"altecnic-caleffi-533-series-prescal-22mm-high-temp-pressure-reducing-valve-with-gauge-port-533751h","title":"Altecnic Caleffi 22mm Prescal Series 533 High Temp Pressure Reducing Valve with Gauge Port 533751H","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRESCAL - SERIES 533 HIGH TEMPERATURE PRESSURE REDUCING VALVE WITH COMPRESSION ENDS (WITH GAUGE PORT)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe series 533 high performance range of pressure reducing valves is designed for domestic and semi-commercial applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures and benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- Max inlet pressure: 16 bar\u003cbr\u003e- Max temperature: 80°C\u003cbr\u003e- Outlet adj range: 1 - 5.5 bar\u003cbr\u003e- Pressure gauge connection: G¼˝\u003cbr\u003e- EN 1567 approved\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 22mm\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e Compression\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e DZR chrome plated\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Potable water\u003cbr\u003e\u003cstrong\u003eMax Inlet Pressure:\u003c\/strong\u003e 16 Barg \u003cbr\u003e\u003cstrong\u003eOutlet Pressure Setting Range:\u003c\/strong\u003e 1 to 5.5 Barg\u003cbr\u003e\u003cstrong\u003eMax Temperature:\u003c\/strong\u003e +80 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 533751H\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, With gauge port\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_533H_High_Temp_Pressure_Reducing_Valve_Datasheet.pdf?v=1770990656\" title=\"Altecnic Caleffi 22mm Prescal Series 533 High Temp Pressure Reducing Valve 533751H Datasheet\" rel=\"noopener\" target=\"_blank\"\u003eAltecnic Caleffi 22mm Prescal Series 533 High Temp Pressure Reducing Valve 533751H\u003c\/a\u003e\u003ca rel=\"noopener\" title=\"Altecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve 533641H\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_533H_High_Temp_Pressure_Reducing_Valve_Datasheet.pdf?v=1770990656\" target=\"_blank\"\u003e Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Altecnic Caleffi 22mm Prescal Series 533 High Temp Pressure Reducing Valve 533751H Installation Guide\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_533H_High_Temp_Pressure_Reducing_Valve_Installation_Guide.pdf?v=1770990656\" target=\"_blank\"\u003eAltecnic Caleffi 22mm Prescal Series 533 High Temp Pressure Reducing Valve 533751H Installation Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":56361499623804,"sku":"AL-533751H","price":45.15,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_22mm_Prescal_Series_533_High_Temp_Pressure_Reducing_Valve_with_Gauge_Port_533751H.jpg?v=1770988711"},{"product_id":"altecnic-caleffi-533-series-prescal-15mm-high-temp-pressure-reducing-valve-with-pressure-gauge-533841h","title":"Altecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve with Pressure Gauge 533841H","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRESCAL - SERIES 533 HIGH TEMPERATURE PRESSURE REDUCING VALVE WITH COMPRESSION ENDS (WITH PRESSURE GAUGE)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe series 533 high performance range of pressure reducing valves is designed for domestic and semi-commercial applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures and benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- Max inlet pressure: 16 bar\u003cbr\u003e- Max temperature: 80°C\u003cbr\u003e- Outlet adj range: 1 - 5.5 bar\u003cbr\u003e- Pressure gauge connection: G¼˝\u003cbr\u003e- EN 1567 approved\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 15mm\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e Compression\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e DZR chrome plated\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Potable water\u003cbr\u003e\u003cstrong\u003eMax Inlet Pressure:\u003c\/strong\u003e 16 Barg \u003cbr\u003e\u003cstrong\u003eOutlet Pressure Setting Range:\u003c\/strong\u003e 1 to 5.5 Barg\u003cbr\u003e\u003cstrong\u003eMax Temperature:\u003c\/strong\u003e +80 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 533841H\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, Supplied with pressure gauge\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Altecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve 533841H Datasheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_533H_High_Temp_Pressure_Reducing_Valve_Datasheet.pdf?v=1770990656\" target=\"_blank\"\u003eAltecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve 533841H Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Altecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve 533841H Installation Guide\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_533H_High_Temp_Pressure_Reducing_Valve_Installation_Guide.pdf?v=1770990656\" target=\"_blank\"\u003eAltecnic Caleffi 15mm Prescal Series 533 High Temp Pressure Reducing Valve 533841H Installation Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":56361500311932,"sku":"AL-533841H","price":46.41,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_15mm_Prescal_Series_533_High_Temp_Pressure_Reducing_Valve_with_Pressure_Gauge_533841H.jpg?v=1770988725"},{"product_id":"altecnic-caleffi-533-series-prescal-22mm-high-temp-pressure-reducing-valve-with-pressure-gauge-533851h","title":"Altecnic Caleffi 22mm Prescal Series 533 High Temp Pressure Reducing Valve with Pressure Gauge 533851H","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRESCAL - SERIES 533 HIGH TEMPERATURE PRESSURE REDUCING VALVE WITH COMPRESSION ENDS (WITH PRESSURE GAUGE)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe series 533 high performance range of pressure reducing valves is designed for domestic and semi-commercial applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures and benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- Max inlet pressure: 16 bar\u003cbr\u003e- Max temperature: 80°C\u003cbr\u003e- Outlet adj range: 1 - 5.5 bar\u003cbr\u003e- Pressure gauge connection: G¼˝\u003cbr\u003e- EN 1567 approved\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 22mm\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e Compression\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e DZR chrome plated\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Potable water\u003cbr\u003e\u003cstrong\u003eMax Inlet Pressure:\u003c\/strong\u003e 16 Barg \u003cbr\u003e\u003cstrong\u003eOutlet Pressure Setting Range:\u003c\/strong\u003e 1 to 5.5 Barg\u003cbr\u003e\u003cstrong\u003eMax Temperature:\u003c\/strong\u003e +80 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 533851H\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, Supplied with pressure gauge\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Altecnic Caleffi 22mm Prescal Series 533 High Temp Pressure Reducing Valve 533851H Datasheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_533H_High_Temp_Pressure_Reducing_Valve_Datasheet.pdf?v=1770990656\" target=\"_blank\"\u003eAltecnic Caleffi 22mm Prescal Series 533 High Temp Pressure Reducing Valve 533851H Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Altecnic Caleffi 22mm Prescal Series 533 High Temp Pressure Reducing Valve 533851H Installation Guide\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_533H_High_Temp_Pressure_Reducing_Valve_Installation_Guide.pdf?v=1770990656\" target=\"_blank\"\u003eAltecnic Caleffi 22mm Prescal Series 533 High Temp Pressure Reducing Valve 533851H Installation Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":56361500410236,"sku":"AL-533851H","price":49.25,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_15mm_Prescal_Series_533_High_Temp_Pressure_Reducing_Valve_with_Pressure_Gauge_533851H.jpg?v=1770988737"},{"product_id":"altecnic-caleffi-535-series-prescal-15mm-high-temp-pressure-reducing-valve-535015h","title":"Altecnic Caleffi 15mm Prescal Series 535 High Temp Pressure Reducing Valve with Gauge Port 535015H","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRESCAL® - SERIES 535 HIGH PERFORMANCE DIAL UP PRESSURE REDUCING VALVE (WITH GAUGE PORT)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePressure reducing valves are installed in residential water systems to reduce and stabilise inlet pressures from mains water supplies or boosted water systems, which generally are too high and variable for domestic appliances to function correctly.\u003c\/p\u003e\n\u003cp\u003eThe 535H series is specially designed for hot and cold services in houses or apartments to equalise the hot or cold water supplies or both and prevent excessive pressure at outlets such as taps and showers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures and benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- Max inlet pressure: 25 bar\u003cbr\u003e- Max temperature: 80°C\u003cbr\u003e- Outlet adj range: 1 - 6 bar\u003cbr\u003e- Pressure gauge connection: G¼”\u003cbr\u003e- Factory setting: 3 bar\u003cbr\u003e- Certification: BS EN 1567\u003cbr\u003e- Static control\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 15mm\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e Compression\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e DZR chrome plated\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Potable water\u003cbr\u003e\u003cstrong\u003eMax Inlet Pressure:\u003c\/strong\u003e 25 Barg \u003cbr\u003e\u003cstrong\u003eOutlet Pressure Setting Range:\u003c\/strong\u003e 1 to 6 Barg\u003cbr\u003e\u003cstrong\u003eMax Temperature:\u003c\/strong\u003e +80 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 535015H\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, With gauge port\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_535_High_Temp_Pressure_Reducing_Valve_Datasheet.pdf?v=1770992738\" title=\"Altecnic Caleffi 15mm Prescal Series 535 High Temp Pressure Reducing Valve 535015 Datasheet\" rel=\"noopener\" target=\"_blank\"\u003eAltecnic Caleffi 15mm Prescal Series 535 High Temp Pressure Reducing Valve 535015H Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_535_High_Temp_Pressure_Reducing_Valve_Installation_Guide.pdf?v=1770992738\" title=\"Altecnic Caleffi 15mm Prescal Series 535 High Temp Pressure Reducing Valve 535015 Installation Guide\" rel=\"noopener\" target=\"_blank\"\u003eAltecnic Caleffi 15mm Prescal Series 535 High Temp Pressure Reducing Valve 535015H Installation Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":56361500836220,"sku":"AL-535015H","price":48.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_15mm_Prescal_Series_535_High_Temp_Pressure_Reducing_Valve_with_Gauge_Port_535015H.jpg?v=1770988784"},{"product_id":"altecnic-caleffi-535-series-prescal-22mm-high-temp-pressure-reducing-valve-535022h","title":"Altecnic Caleffi 22mm Prescal Series 535 High Temp Pressure Reducing Valve with Gauge Port 535022H","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRESCAL® - SERIES 535 HIGH PERFORMANCE DIAL UP PRESSURE REDUCING VALVE (WITH GAUGE PORT)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePressure reducing valves are installed in residential water systems to reduce and stabilise inlet pressures from mains water supplies or boosted water systems, which generally are too high and variable for domestic appliances to function correctly.\u003c\/p\u003e\n\u003cp\u003eThe 535H series is specially designed for hot and cold services in houses or apartments to equalise the hot or cold water supplies or both and prevent excessive pressure at outlets such as taps and showers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures and benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- Max inlet pressure: 25 bar\u003cbr\u003e- Max temperature: 80°C\u003cbr\u003e- Outlet adj range: 1 - 6 bar\u003cbr\u003e- Pressure gauge connection: G¼”\u003cbr\u003e- Factory setting: 3 bar\u003cbr\u003e- Certification: BS EN 1567\u003cbr\u003e- Static control\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 22mm\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e Compression\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e DZR chrome plated\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Potable water\u003cbr\u003e\u003cstrong\u003eMax Inlet Pressure:\u003c\/strong\u003e 25 Barg \u003cbr\u003e\u003cstrong\u003eOutlet Pressure Setting Range:\u003c\/strong\u003e 1 to 6 Barg\u003cbr\u003e\u003cstrong\u003eMax Temperature:\u003c\/strong\u003e +80 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 535022H\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, With gauge port\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Altecnic Caleffi 22mm Prescal Series 535 High Temp Pressure Reducing Valve 535022H Datasheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_535_High_Temp_Pressure_Reducing_Valve_Datasheet.pdf?v=1770992738\" target=\"_blank\"\u003eAltecnic Caleffi 22mm Prescal Series 535 High Temp Pressure Reducing Valve 535022H Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Altecnic Caleffi 22mm Prescal Series 535 High Temp Pressure Reducing Valve 535022H Installation Guide\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_Prescal_Series_535_High_Temp_Pressure_Reducing_Valve_Installation_Guide.pdf?v=1770992738\" target=\"_blank\"\u003eAltecnic Caleffi 22mm Prescal Series 535 High Temp Pressure Reducing Valve 535022H Installation Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":56361500934524,"sku":"AL-535022H","price":53.73,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic_Caleffi_22mm_Prescal_Series_535_High_Temp_Pressure_Reducing_Valve_with_Gauge_Port_535022H.jpg?v=1770988794"},{"product_id":"altecnic-caleffi-311-series-safety-relief-valve-3-4-x-3-4-f-x-f-4-bar-311540","title":"Altecnic \/ Caleffi 311 Series Safety Relief Valve 3\/4\" x 3\/4\" F x F 4 Bar - 311540","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #ff0000;\"\u003eThis is a stock item. Order by 5pm Monday to Thursday and 4.30pm Friday for same day despatch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Altecnic \/ Caleffi series 311 and 312 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 3\/4\" x 3\/4\"\u003cbr\u003e\u003cstrong\u003eConnections:\u003c\/strong\u003e BSP Female Inlet x BSP Female Outlet\u003cbr\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass\u003cbr\u003e\u003cstrong\u003eMedium:\u003c\/strong\u003e Air and Water\u003cbr\u003e\u003cstrong\u003eSet Pressure:\u003c\/strong\u003e 4 Barg \u003cbr\u003e\u003cstrong\u003eDischarge Flowrate:\u003c\/strong\u003e 178.25 kg\/hr\u003cbr\u003e\u003cstrong\u003eMax Boiler Rating:\u003c\/strong\u003e 103.3 kW\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e +5 to +110 degC\u003cbr\u003e\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 311540\u003cbr\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e WRAS approved, CE marked\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDatasheets\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-3-4-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-5-Bar-311550.pdf?v=1763735059\" title='Altecnic \/ Caleffi 311 Series Safety Relief Valve 3\/4\" x 3\/4\" F x F 4 bar - 311540 Datasheet' rel=\"noopener\" target=\"_blank\"\u003eAltecnic \/ Caleffi 311 Series Safety Relief Valve 3\/4\" x 3\/4\" F x F 4 Bar - 311540 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Altecnic\/Caleffi","offers":[{"title":"Default Title","offer_id":57247876022652,"sku":"AL-311540","price":13.37,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/files\/Altecnic-Caleffi-3-4-Inch-F-x-F-311-Series-Safety-Pressure-Relief-Valve-6-Bar-311560.jpg?v=1699306858"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/3452\/6525\/collections\/Altecnic_Caleffi_22mm_Prescal_Series_535_High_Temp_Pressure_Reducing_Valve_with_Gauge_Port_535022H.jpg?v=1788855540","url":"https:\/\/safetyvalvesonline.com\/collections\/altecnic-caleffi-valves.oembed","provider":"Safety Valves Online","version":"1.0","type":"link"}