{"title":"Backflow Devices - Watts - Dual Check - 1\/2\"","description":null,"products":[{"product_id":"1-2-watts-lf7ru2-2-dual-check-valve","title":"1\/2\" Watts LF7RU2-2 Dual Check Valve","description":"\u003cp\u003eThe 1\/2\" Watts Series LF7RU2-2 Dual Check Valve is designed to prevent the reverse flow of polluted water from entering the potable drinking water supply in residential systems, either at the service entrance or individual outlets.\u003c\/p\u003e\u003cp\u003eThis valve features \u003cstrong\u003eLead Free*\u003c\/strong\u003e construction and incorporates two compact, replaceable check modules for reliable backflow prevention in continuous pressure applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDesigned for \u003cstrong\u003enon-health hazard residential water system containment\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCan be installed in either a \u003cstrong\u003evertical or horizontal\u003c\/strong\u003e position\u003c\/li\u003e\n\u003cli\u003eFeatures \u003cstrong\u003etwo compact replaceable check modules\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Free*\u003c\/strong\u003e cast copper silicon alloy body construction\u003c\/li\u003e\n\u003cli\u003eEquipped with \u003cstrong\u003estainless steel springs\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMeets \u003cstrong\u003eANSI\/ASSE Standard 1024\u003c\/strong\u003e requirements\u003c\/li\u003e\n\u003cli\u003eInstalled immediately downstream of the residential water meter\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOperating Conditions\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Working Pressure:\u003c\/strong\u003e 10 psi (69 kPa)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Pressure:\u003c\/strong\u003e 175 psi (12.07 bar)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e 33°F – 180°F (0.5°C-82°C) continuous\u003c\/li\u003e\n\u003c\/ul\u003e\u003cem\u003ePlease check with local inspection authorities for specific installation requirements and compliance with state codes and standards.\u003c\/em\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796713677077,"sku":"0072203","price":138.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/179938.jpg?v=1772727460"},{"product_id":"1-2-watts-9d-m3-dual-check-with-atmospheric-vent-threaded-ends","title":"1\/2\" Watts 9D-M3 Dual Check with Atmospheric Vent **Threaded Ends**","description":"\u003cp\u003eThe 1\/2\" Watts 9D-M3 Dual Check Valve with Intermediate Atmospheric Vent prevents the reverse flow of hot or cold polluted water from entering into the potable water supply. This valve is designed for continuous pressure, non-health hazard applications in smaller supply lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFeatures a durable \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\u003eIncorporates two \u003cstrong\u003etight-sealing rubber check valves\u003c\/strong\u003e to ensure reliable backflow prevention.\u003c\/li\u003e\n\u003cli\u003eDesigned with \u003cstrong\u003etrue line-sized construction\u003c\/strong\u003e, allowing check modules to open further to reduce dirt and debris fouling.\u003c\/li\u003e\n\u003cli\u003eOffers \u003cstrong\u003emaximum flow at low pressure drop\u003c\/strong\u003e for efficient operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact design\u003c\/strong\u003e with simplicity for easy maintenance.\u003c\/li\u003e\n\u003cli\u003eCan be installed either \u003cstrong\u003evertically or horizontally\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIdeally suited for use with \u003cstrong\u003elaboratory equipment\u003c\/strong\u003e, \u003cstrong\u003eprocessing tanks\u003c\/strong\u003e, \u003cstrong\u003esterilizers\u003c\/strong\u003e, \u003cstrong\u003edairy equipment\u003c\/strong\u003e, and similar non-health hazard applications.\u003c\/li\u003e\n\u003cli\u003eParticularly recommended for \u003cstrong\u003eboiler feed lines\u003c\/strong\u003e to prevent backflow when supply pressure falls below system pressure.\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. Before installing, consult your local water authority, building and plumbing codes.\u003c\/em\u003e\u003c\/p\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796736745749,"sku":"0061935","price":246.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/180728.jpg?v=1772728113"},{"product_id":"1-2-watts-9ds-m3-dual-check-with-atmospheric-vent-solder-ends","title":"1\/2\" Watts 9DS-M3 Dual Check with Atmospheric Vent **Solder Ends**","description":"\u003cp\u003eThe Watts Series 9D Dual Check Valve with Intermediate Atmospheric Vent is designed to prevent the reverse flow of hot or cold polluted water from entering a potable water supply. This valve is suitable for continuous pressure, non-health hazard applications in smaller supply lines.\u003c\/p\u003e\u003cp\u003eThe Series 9D is ideally suited for applications such as laboratory equipment, processing tanks, sterilizers, dairy equipment, and is specifically recommended for boiler feed lines to prevent backflow when supply pressure falls below system pressure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFeatures a \u003cstrong\u003eforged bronze 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-sealing \u003cstrong\u003erubber check valves\u003c\/strong\u003e. The primary check valve uses rubber-to-rubber seating, while the secondary check valve 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\u003e\n\u003cstrong\u003eTrue line-sized construction\u003c\/strong\u003e allows check modules to open freely, reducing check fouling by allowing dirt and debris to pass.\u003c\/li\u003e\n\u003cli\u003eDesigned for \u003cstrong\u003emaximum flow at low pressure drop\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact design\u003c\/strong\u003e combining economy with performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign simplicity\u003c\/strong\u003e for easy maintenance.\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\u003eConnections\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFurnished with \u003cstrong\u003eunion solder end connections\u003c\/strong\u003e to facilitate easy removal and replacement for maintenance.\u003c\/li\u003e\n\u003cli\u003eFeatures a \u003cstrong\u003e1\/2 inch drain thread connection\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eA WARNING: 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. Before installing, consult your local water authority, building and plumbing codes for standard material product.\u003c\/em\u003e\u003c\/p\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796740120853,"sku":"0061952","price":246.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/180799.jpg?v=1772728167"},{"product_id":"1-2-lf9d-m3","title":"1\/2 LF9D-M3","description":"\u003cp\u003eThis 1\/2 inch lead free dual check valve backflow preventer with intermediate atmospheric vent prevents the reverse flow of hot or cold polluted water from entering into the potable water supply. It is designed for continuous pressure non-health hazard applications in smaller supply lines, such as laboratory equipment, processing tanks, sterilizers, dairy equipment, and specifically for boiler feed lines to prevent backflow when supply pressure falls below system pressure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Materials\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 \u003cstrong\u003edurable tight seating rubber check valves\u003c\/strong\u003e, with a primary check utilizing rubber-to-rubber seating and a secondary check utilizing rubber-to-metal seating.\u003c\/li\u003e\n\u003cli\u003eDesigned with \u003cstrong\u003etrue line-sized construction\u003c\/strong\u003e allowing check modules to open fully, enabling dirt and debris to pass more freely to reduce check fouling.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAllows for \u003cstrong\u003emaximum flow at low pressure drop\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact design\u003c\/strong\u003e for economy combined with performance.\u003c\/li\u003e\n\u003cli\u003eDesign simplicity facilitates easy maintenance.\u003c\/li\u003e\n\u003cli\u003eCan be installed \u003cstrong\u003evertically or horizontally\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFurnished with \u003cstrong\u003eunion connections\u003c\/strong\u003e to facilitate removal and replacement for maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eThis valve should only be used and properly installed so that spillage of water will not cause damage. To avoid water damage due to valve operation, a drain pipe must be installed to terminate 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":49796771610901,"sku":"88006822","price":281.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/182132.jpg?v=1772729250"},{"product_id":"1-2-lf9ds-m3","title":"1\/2 LF9DS-M3","description":"\u003cp\u003eThis 1\/2 inch \u003cstrong\u003eLead Free\u003c\/strong\u003e dual check valve backflow preventer with intermediate atmospheric vent prevents the \u003cstrong\u003ereverse flow of hot or cold polluted water\u003c\/strong\u003e from entering into the potable water supply. This valve is designed for \u003cstrong\u003econtinuous pressure non-health hazard applications\u003c\/strong\u003e in smaller supply lines, such as laboratory equipment, processing tanks, sterilizers, dairy equipment, and specifically for boiler feed lines.\u003c\/p\u003e\u003cp\u003eIt consists of a \u003cstrong\u003elead free forged brass body\u003c\/strong\u003e with \u003cstrong\u003estainless steel internal parts\u003c\/strong\u003e, an \u003cstrong\u003eintegral strainer\u003c\/strong\u003e, and two durable tight seating rubber check valves.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Free*\u003c\/strong\u003e construction with less than 0.25% lead content by weight on wetted surfaces.\u003c\/li\u003e\n\u003cli\u003eTrue line-sized construction allows check modules to open further, reducing check fouling.\u003c\/li\u003e\n\u003cli\u003eFeatures \u003cstrong\u003estainless steel internal parts\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eProvides \u003cstrong\u003emaximum flow at low pressure drop\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFurnished with \u003cstrong\u003eunion solder connections\u003c\/strong\u003e to facilitate removal and replacement for maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact design\u003c\/strong\u003e for economy and performance.\u003c\/li\u003e\n\u003cli\u003eDesigned for \u003cstrong\u003eeasy maintenance\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCan be installed \u003cstrong\u003evertically or horizontally\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003e\u003cstrong\u003eNOTICE:\u003c\/strong\u003e This valve should only be used and properly installed so that spillage of water will not cause damage. To avoid water damage due to valve operation, a drain pipe must be installed. It should terminate 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":49796772069653,"sku":"88006837","price":281.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/182160.jpg?v=1772729271"},{"product_id":"watts-12-bd911st-ut-bronze-combination-dial-set-fill-valve-backflow-preventer-union-solder-or-threaded-inlet-x-union-threaded-outlet-connections-35567","title":"Watts® 1\/2\" BD911ST-UT Bronze Combination Dial Set Fill Valve Backflow Preventer, Union Solder or Threaded Inlet x Union Threaded Outlet Connections","description":"","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50124176654613,"sku":"0386476","price":394.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/192265.jpg?v=1788463506"},{"product_id":"watts-12-bd911s-m3-bronze-combination-dial-set-fill-valve-backflow-preventer-union-solder-inlet-x-threaded-outlet-connections-35654","title":"Watts® 1\/2\" BD911S-M3 Bronze Combination Dial Set Fill Valve Backflow Preventer, Union Solder Inlet x Threaded Outlet Connections","description":"","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50124189171989,"sku":"0386468","price":442.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/192264.jpg?v=1788463424"}],"url":"https:\/\/www.backflowpreventer.com\/collections\/backflow-devices-watts-dual-check-1-2.oembed","provider":"Water Specialties Company","version":"1.0","type":"link"}