{"title":"Boiler Fill Valves","description":"","products":[{"product_id":"553549a-autofill-automatic-boiler-fill-valve-pressure-indicator-1-2-inch-sweat-inlet-by-1-2-inch","title":"553549A - Automatic Boiler Fill Valve with Pressure Indicator - 1\/2\" SWT x 1\/2\" MNPT","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 553549A - AutoFill Automatic Boiler Fill Valve, Pressure Indicator, 1\/2\" SWT x 1\/2\" MNPT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe automatic filling valve is a device consisting of a pressure reducing valve with compensating seat, visual system pressure setting indicator, an inlet filter, anti-scale internal parts, a shut-off valve (round knob on bottom) and a check valve.\u003c\/p\u003e\n\u003cp\u003eIt is installed on the water inlet piping in sealed heating systems, and its main function is to maintain the pressure of the system at a set value, automatically filling up with water as required.\u003c\/p\u003e\n\u003cp\u003eThe valve is pre-adjustable, meaning it can be set to the desired pressure value before the system charging phase.\u003cbr\u003eAfter installation, during the filling or topping-off phase, the water feed will stop when the set pressure is reached. This valve fills 50% faster than other valves. There are no levers to flip or valve to close.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBody: Brass\u003c\/li\u003e\n\u003cli\u003eCover: PA 66 GF 30\u003c\/li\u003e\n\u003cli\u003eSeals: NBR\u003c\/li\u003e\n\u003cli\u003eSuitable fluids: water, glycol solution\u003c\/li\u003e\n\u003cli\u003eMax Percentage of Glycol: 50%\u003c\/li\u003e\n\u003cli\u003eMax Working Pressure: 230 psi (16 bar)\u003c\/li\u003e\n\u003cli\u003ePressure Setting Range: 3–60 psi (0.2–4 bar)\u003c\/li\u003e\n\u003cli\u003eFactory Setting: 15 psi (1.035 bar)\u003c\/li\u003e\n\u003cli\u003eIndicator Accuracy: ±2 psi (±0.15 bar)\u003c\/li\u003e\n\u003cli\u003eMax Working Temperature: 150°F (65°C)\u003c\/li\u003e\n\u003cli\u003ePressure gauge scale: 0-60 psi \/ 0-4 bar\u003c\/li\u003e\n\u003cli\u003eConnections: 1\/2\" sweat inlet x 1\/2\" NPT female outlet\u003c\/li\u003e\n\u003cli\u003ePressure Gauge Outlet: 1\/4 NPT\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123235\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825437192246,"sku":"553549A","price":82.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_553549a_1_wm.jpg?v=1755629351"},{"product_id":"553542a-autofill-boiler-feed-valve-1-2","title":"553542A - AutoFill Boiler Feed Valve - 1\/2\"","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 553542A - AutoFill Boiler Feed Valve - 1\/2\" \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe automatic filling valve is a device consisting of a pressure reducing valve with compensating seat, visual system pressure setting indicator, an inlet filter, anti-scale internal parts, a shut-off valve (round knob on bottom) and a check valve. It is installed on the water inlet piping in sealed heating systems, and its main function is to maintain the pressure of the system at a set value, automatically filling up with water as required.\u003c\/p\u003e\n\u003cp\u003eThe valve is pre-adjustable, meaning it can be set to the desired pressure value before the system charging phase. After installation, during the filling or topping-off phase, the water feed will stop when the set pressure is reached. This valve fills 50% faster than other valves. There are no levers to flip or valve to close.\u003c\/p\u003e\n\u003cp\u003ePre-assembled with the 573 series backflow preventer, the AutoFill Combo features an atmospheric vent which is designed to protect drinking water systems from return flow, caused by back-siphoning or back pressure, of contaminated fluids. The 573 series has been specifically certified to standards CSA B64.3 and ASSE 1012.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIN connection: 1\/2\" FNPT, union\u003c\/li\u003e\n\u003cli\u003eOUT connection: 1\/2\" MNPT\u003c\/li\u003e\n\u003cli\u003eMaximum upstream pressure: 230 psi\u003c\/li\u003e\n\u003cli\u003eMedium temperature range: 41–150 degrees F\u003c\/li\u003e\n\u003cli\u003eSetting: 15 psi\u003c\/li\u003e\n\u003cli\u003eAdjustment pressure range: 3–60 psi\u003c\/li\u003e\n\u003cli\u003ePressure gauge scale: 0–60 psi (0–4 bar)\u003c\/li\u003e\n\u003cli\u003eMaterial: brass\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123237\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":46058485350645,"sku":"553542A","price":86.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/IMG_553542A_1_wm.jpg?v=1760116801"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/collections\/boiler_fill_valve.png?v=1595481982","url":"https:\/\/www.supplystop.com\/collections\/boiler-fill-valves\/caleffi.oembed","provider":"SupplyStop.com","version":"1.0","type":"link"}