{"product_id":"1-2-in-pre-adjustable-automatic-filling-valve-mnpt-x-fnpt","title":"1\/2\" Pre-Adjustable Automatic Filling Valve - MNPT x FNPT","description":"\u003cp\u003eThe automatic filling unit is a device consisting of a pressure reducing valve with compensating seat, an inlet filter, a shut-off valve 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 stable at a set value, automatically filling up with water as required. This product has the characteristic of being pre-adjustable, which means that it can be adjusted at the required 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. A pre-assembled version is also available, complete with upstream backflow preventer.\u003c\/p\u003e","brand":"CALEFFI","offers":[{"title":"Default Title","offer_id":53406240407841,"sku":"553542A","price":128.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1905\/1041\/files\/Caleffi_553542A_1cad7ac5-1596-46fd-aef4-895410a72955.jpg?v=1790122088","url":"https:\/\/standardvmi.com\/products\/1-2-in-pre-adjustable-automatic-filling-valve-mnpt-x-fnpt","provider":"Standard Plumbing Supply","version":"1.0","type":"link"}