{"product_id":"3-4-watts-9d-m2-dual-check-with-atmospheric-vent-threaded-ends","title":"3\/4\" Watts 9D-M2 Dual Check with Atmospheric Vent **Threaded Ends**","description":"\u003cp\u003eThe Watts Series 9D 3\/4\" Dual Check Valve with Intermediate Atmospheric Vent prevents the reverse flow of hot or cold polluted water from entering potable water supplies. It is designed for continuous pressure, non-health hazard applications in smaller supply lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePrimary Applications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLaboratory equipment\u003c\/li\u003e\n\u003cli\u003eProcessing tanks\u003c\/li\u003e\n\u003cli\u003eSterilizers\u003c\/li\u003e\n\u003cli\u003eDairy equipment\u003c\/li\u003e\n\u003cli\u003eBoiler feed lines (to prevent backflow when supply pressure falls below system pressure)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eKey Features and Construction\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBronze 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\u003eTwo \u003cstrong\u003edurable, tight-sealing rubber check valves\u003c\/strong\u003e. The primary check uses rubber-to-rubber seating, and the secondary check uses rubber-to-metal seating.\u003c\/li\u003e\n\u003cli\u003eIn the event of downstream check valve fouling, leakage is vented to atmosphere, safeguarding the potable water system.\u003c\/li\u003e\n\u003cli\u003eFeatures \u003cstrong\u003eunion connections\u003c\/strong\u003e on inlet and outlet for ease of removal and maintenance.\u003c\/li\u003e\n\u003cli\u003eAllows for \u003cstrong\u003emaximum flow at low pressure drop\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCan be installed \u003cstrong\u003evertically or horizontally\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCompact design for economy and performance.\u003c\/li\u003e\n\u003cli\u003eTrue line-sized construction allows check modules to open freely, reducing dirt and debris fouling.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e It is illegal to use this product in any plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. Always consult local water authority, building, and plumbing codes before installation. This valve should only be used and properly installed so that spillage of water could not cause damage. A drain pipe must be installed, terminating approximately 12\" (305mm) above a floor drain or through an an air gap, and the vent opening or drain line must not be plugged.\u003c\/em\u003e\u003c\/p\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796720263445,"sku":"0061888","price":252.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/180087.jpg?v=1772727578","url":"https:\/\/www.backflowpreventer.com\/products\/3-4-watts-9d-m2-dual-check-with-atmospheric-vent-threaded-ends","provider":"Water Specialties Company","version":"1.0","type":"link"}