{"product_id":"4-lf957zrpda-osy-gpm","title":"4 LF957ZRPDA-OSY-GPM","description":"\u003cp\u003eThis 4 inch Lead Free Reduced Pressure Detector Backflow Preventer Assembly with OSY Shutoff Valves and a Gallons\/Minute Meter is designed to protect potable water systems from contamination due to backsiphonage and backpressure, in accordance with national plumbing codes.\u003c\/p\u003e\u003cp\u003eIt is commonly used in health hazard applications, such as on fire sprinkler systems, and to monitor unauthorized water use or detect leakage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFeatures a \u003cstrong\u003e304 (Schedule 40) stainless steel housing and sleeve\u003c\/strong\u003e for durability.\u003c\/li\u003e\n\u003cli\u003eUtilizes \u003cstrong\u003etwo independent torsion spring check modules\u003c\/strong\u003e and a differential pressure relief valve.\u003c\/li\u003e\n\u003cli\u003eIncludes \u003cstrong\u003eUL Classified and FM Approved outside stem and yoke (OSY) resilient seated gate valves\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThe assembly is \u003cstrong\u003eextremely compact\u003c\/strong\u003e and approximately 70% lighter than traditional designs.\u003c\/li\u003e\n\u003cli\u003eApproved for \u003cstrong\u003ehorizontal Z-pattern installation\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eEquipped with \u003cstrong\u003egroove fittings\u003c\/strong\u003e for integral pipeline adjustment and ease of serviceability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePerformance \u0026amp; Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003epatented torsion spring check\u003c\/strong\u003e design ensures the lowest pressure loss and drip-tight closure against reverse flow.\u003c\/li\u003e\n\u003cli\u003eA \u003cstrong\u003egallons per minute meter\u003c\/strong\u003e is furnished to detect underground leaks and unauthorized water usage from the fire sprinkler system.\u003c\/li\u003e\n\u003cli\u003eIncludes a \u003cstrong\u003eflood sensor on the relief valve\u003c\/strong\u003e to detect excessive water discharges, providing an alert for facility personnel. \u003cem\u003eAn add-on connection kit is required to activate the flood sensor's communication features; without it, the sensor is passive.\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Free* construction\u003c\/strong\u003e ensures the wetted surface contains less than 0.25% of lead by weight.\u003c\/li\u003e\n\u003cli\u003eFeatures \u003cstrong\u003ereversible elastomer check discs\u003c\/strong\u003e for extended service life.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796712628501,"sku":"0124753","price":13915.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/184951.jpg?v=1772727426","url":"https:\/\/www.backflowpreventer.com\/products\/4-lf957zrpda-osy-gpm","provider":"Water Specialties Company","version":"1.0","type":"link"}