{"product_id":"4-lf850-dnrs","title":"4 LF850-DNRS","description":"\u003cp\u003eThis 4 inch lead free MasterSeries® double check valve backflow preventer assembly is designed to prevent the backflow of polluted water from entering into the potable water supply due to backsiphonage and\/or backpressure conditions. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as non-health hazards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eConstruction and Design\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThis assembly features a \u003cstrong\u003efused epoxy ductile iron body\u003c\/strong\u003e with a patented \u003cstrong\u003eArmorTek® 3-part advanced epoxy coating system\u003c\/strong\u003e, engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrate.\u003c\/li\u003e\n\u003cli\u003eIncludes \u003cstrong\u003edomestic non-rising stem (NRS) resilient seated gate valves\u003c\/strong\u003e, top-mounted test cocks, and two in-line independent positive seating check modules.\u003c\/li\u003e\n\u003cli\u003eDesigned for \u003cstrong\u003ein-line serviceability\u003c\/strong\u003e with \u003cstrong\u003ereplaceable check discs and seats\u003c\/strong\u003e, requiring no special tools for servicing.\u003c\/li\u003e\n\u003cli\u003eFeatures a \u003cstrong\u003ecompact modular design\u003c\/strong\u003e for easy maintenance and a \u003cstrong\u003ewinterization feature\u003c\/strong\u003e with disc retainers and valve body drain ports.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Free* construction\u003c\/strong\u003e ensures compliance with low lead installation requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOperation and Protection\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSpecifically designed for \u003cstrong\u003enon-health hazard (pollutant) applications\u003c\/strong\u003e to protect potable drinking water systems.\u003c\/li\u003e\n\u003cli\u003ePrevents backsiphonage and backpressure conditions as mandated by Local Governing Water Utility Code.\u003c\/li\u003e\n\u003cli\u003eThe assembly incorporates \u003cstrong\u003estainless steel check components\u003c\/strong\u003e and a captured modular spring assembly for reliable performance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cem\u003e\u003cp\u003eInstallation requires thorough reading of all instructions and product safety information. Inquire with governing authorities for local installation requirements prior to beginning installation.\u003c\/p\u003e\u003c\/em\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796694016277,"sku":"0683082","price":7899.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/179327.jpg?v=1772726928","url":"https:\/\/www.backflowpreventer.com\/products\/4-lf850-dnrs","provider":"Water Specialties Company","version":"1.0","type":"link"}