{"product_id":"3-4-lf9ds-m2","title":"3\/4 LF9DS-M2","description":"\u003cp\u003eThis Watts Series LF9D dual check valve backflow preventer with an intermediate atmospheric vent is designed for non-health hazard applications in smaller supply lines. It effectively prevents the reverse flow of hot or cold polluted water from entering the potable water supply, particularly suited for boiler feed lines, laboratory equipment, and sterilizers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Operation\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFeatures a \u003cstrong\u003elead free forged brass body\u003c\/strong\u003e with \u003cstrong\u003estainless steel internal parts\u003c\/strong\u003e and an \u003cstrong\u003eintegral strainer\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eIncorporates two durable, tight-seating \u003cstrong\u003erubber check valve backflow preventers\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThe \u003cstrong\u003eprimary check valve\u003c\/strong\u003e uses a rubber disc seating against a rubber part for tight closure.\u003c\/li\u003e\n\u003cli\u003eThe \u003cstrong\u003esecondary check valve\u003c\/strong\u003e features rubber disc-to-metal seating.\u003c\/li\u003e\n\u003cli\u003eIn the event of downstream check valve fouling, leakage is vented to atmosphere through the vent port, safeguarding the potable water system.\u003c\/li\u003e\n\u003cli\u003eCan be installed \u003cstrong\u003evertically or horizontally\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Free\u003c\/strong\u003e construction ensures the wetted surface contains less than 0.25% lead by weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue line-sized construction\u003c\/strong\u003e allows check modules to open further, reducing fouling from dirt and debris.\u003c\/li\u003e\n\u003cli\u003eProvides \u003cstrong\u003emaximum flow at low pressure drop\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact design\u003c\/strong\u003e combines economy with performance and features design simplicity for easy maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnion solder connections\u003c\/strong\u003e facilitate easy removal and replacement for maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003e\u003cstrong\u003eSafety Warning:\u003c\/strong\u003e This valve should only be used and properly installed so that spillage of water will not cause damage. A drain pipe must be installed, terminating approximately 12 inches (305mm) above a floor drain or through an air gap piped to a floor drain or other suitable place of disposal. Under no circumstances should the vent opening or drain line be plugged.\u003c\/em\u003e\u003c\/p\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796768432405,"sku":"88006836","price":290.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/182021.jpg?v=1772729154","url":"https:\/\/www.backflowpreventer.com\/products\/3-4-lf9ds-m2","provider":"Water Specialties Company","version":"1.0","type":"link"}