{"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":53084630548816,"sku":"AL-309473CST","price":28.54,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/2344\/3024\/files\/Altecnic-Caleffi-Pressure-Temperature-Relief-Valve-1-2-Inch-90DegC-7-Bar-309473CST.jpg?v=1780050612","url":"https:\/\/industrialvalveoutlet.com\/products\/altecnic-caleffi-309-series-pressure-temperature-relief-valve-1-2-90-deg-c-7-bar-309473cst","provider":"Industrial Valve Outlet","version":"1.0","type":"link"}