{"product_id":"1-2-in-pre-adjustable-combo-automatic-filling-valve-brass","title":"1\/2\" Pre-Adjustable Combo Automatic Filling Valve - Brass","description":"\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. The 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. Pre-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","brand":"CALEFFI","offers":[{"title":"Default Title","offer_id":53406549147937,"sku":"573012A","price":239.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1905\/1041\/files\/Caleffi_573012A_APNS_67010903-9496-4ffb-9770-0095eb801264.jpg?v=1790122257","url":"https:\/\/standardvmi.com\/products\/1-2-in-pre-adjustable-combo-automatic-filling-valve-brass","provider":"Standard Plumbing Supply","version":"1.0","type":"link"}