{"title":"Backflow Devices - Watts - DCVA - Double Check Valve Assemblies - 6\"","description":null,"products":[{"product_id":"6-lf709-dosy","title":"6 LF709-DOSY","description":"\u003cp\u003eThis 6 inch \u003cstrong\u003eLead Free\u003c\/strong\u003e \u003cstrong\u003edouble check valve backflow preventer assembly\u003c\/strong\u003e is designed to prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage and\/or backpressure.\u003c\/p\u003e\u003cp\u003eIts compact \u003cstrong\u003emodular design\u003c\/strong\u003e facilitates easy maintenance with a single access cover for in-line repairs. 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 \u0026amp; Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFeatures a \u003cstrong\u003efused epoxy coated cast iron body\u003c\/strong\u003e for durability.\u003c\/li\u003e\n\u003cli\u003eIncorporates \u003cstrong\u003eArmorTek® coating technology\u003c\/strong\u003e, a patented 3-part advanced epoxy system engineered to reduce \u003cstrong\u003emicrobial-induced corrosion (MIC)\u003c\/strong\u003e and protect exposed metal substrate.\u003c\/li\u003e\n\u003cli\u003eEquipped with \u003cstrong\u003edomestic outside stem and yoke (OSY) resilient seated gate valves\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eIncludes \u003cstrong\u003etwo in-line independent positive seating check modules\u003c\/strong\u003e with \u003cstrong\u003ecaptured springs\u003c\/strong\u003e for safety.\u003c\/li\u003e\n\u003cli\u003eDesigned for \u003cstrong\u003emaximum flow at low pressure drop\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFeatures \u003cstrong\u003ereplaceable check discs and seats\u003c\/strong\u003e for simplified servicing.\u003c\/li\u003e\n\u003cli\u003eNo special tools are required for servicing.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796728389909,"sku":"0792169","price":18565.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/180470.jpg?v=1772727900"},{"product_id":"lfrk-709-s-6-1st-or-2nd-check-seat","title":"LFRK 709 S 6\"  1st or 2nd Check Seat","description":"\u003cdiv\u003eSeries 709 Double Check Valve Assemblies were manufactured in sizes from 3\/4 - 10\". The smaller 3\/4 - 2\" devices were produced from 1973 - 1993 and were constructed of bronze. Watts also made a hot water version of the 709 which was distinguished by the suffix \"HW\". Although the valve has been discontinued, a full line of repair parts are still available. The larger 2 1\/2 - 10\" devices began production in 1973 and are still being manufactured. The 2 1\/2 - 3\" valve can be ordered with bronze body or epoxy coated cast iron. the 4 - 10\" devices are all epoxy coated cast iron. 2 1\/2 - 10\" can be ordered with a number of valve options. All models have two check covers and self contained check valves. All models have replaceable seats and require no special tools for repair.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg src=\"https:\/\/fireresq-documents.s3.amazonaws.com\/wsc\/lead-free-compliant.png\"\u003e\u003c\/div\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796734615829,"sku":"0794021","price":822.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/180660.jpg?v=1772728058"},{"product_id":"6-774-osy-ts","title":"6 774-OSY-TS","description":"6 IN SS Double Check Valve Assembly Backflow Preventer, OSY Shutoffs, Tamper Switch, Short Lay Length","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796773150997,"sku":"88003124","price":10152.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/182216.jpg?v=1772729318"},{"product_id":"6-757n-nrs-iot","title":"6 757N-NRS-IOT","description":"","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796821975317,"sku":"88003424","price":10637.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/191044.jpg?v=1783341238"},{"product_id":"6-lf709-dnrs-iot","title":"6 LF709-DNRS-IOT","description":"\u003cp\u003eThe 6 inch Watts Series LF709 Lead Free Double Check Valve Assembly is designed to prevent the backflow of polluted water from entering into the potable water supply.\u003c\/p\u003e\u003cp\u003eThis backflow preventer is ideal for non-health hazard installations in continuous pressure piping applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFeatures a \u003cstrong\u003emodular check design\u003c\/strong\u003e concept for simplified maintenance and assembly.\u003c\/li\u003e\n\u003cli\u003eEquipped with \u003cstrong\u003eintegrated pressure-sensing test cocks\u003c\/strong\u003e (Model IOT) to measure pressure fluctuations at three locations.\u003c\/li\u003e\n\u003cli\u003eComponents are coated with \u003cstrong\u003eArmorTek®\u003c\/strong\u003e, a patented three-part advanced epoxy system engineered to resist microbial-induced corrosion (MIC) and protect exposed metal surfaces.\u003c\/li\u003e\n\u003cli\u003eConstructed with \u003cstrong\u003eLead Free*\u003c\/strong\u003e materials to comply with relevant installation requirements.\u003c\/li\u003e\n\u003cli\u003eUtilizes \u003cstrong\u003edomestic NRS resilient seated gate valves\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDesigned for \u003cstrong\u003emaximum flow at low pressure drop\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFeatures \u003cstrong\u003ereplaceable stainless steel seats\u003c\/strong\u003e and \u003cstrong\u003ecaptured spring assemblies\u003c\/strong\u003e for safety.\u003c\/li\u003e\n\u003cli\u003eApproved for \u003cstrong\u003evertical flow up installation\u003c\/strong\u003e (for 4\" to 10\" sizes).\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eAn add-on monitoring connection kit is required to activate the pressure sensors and transmit data; without it, the sensors are passive. Always consult local authorities and read all installation instructions for proper use and compliance.\u003c\/em\u003e\u003c\/p\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796830724373,"sku":"88003396","price":18619.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/184109.jpg?v=1772731163"},{"product_id":"6-lf709-qt-s-fda-iot","title":"6 LF709-QT-S-FDA-IOT","description":"\u003cp\u003eThis \u003cstrong\u003eWatts Series LF709 6 inch Lead Free Double Check Valve Backflow Preventer Assembly\u003c\/strong\u003e is designed to prevent the reverse flow of polluted water into potable water systems. 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Design\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e Fused \u003cstrong\u003eepoxy coated cast iron\u003c\/strong\u003e for durability and corrosion resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Utilizes \u003cstrong\u003eArmorTek®\u003c\/strong\u003e, a patented three-part advanced epoxy system engineered to reduce \u003cstrong\u003emicrobial-induced corrosion (MIC)\u003c\/strong\u003e and protect exposed metal substrates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e Features \u003cstrong\u003eFDA epoxy coated quarter-turn ball valves\u003c\/strong\u003e for reliable shutoff.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck Design:\u003c\/strong\u003e Modular design concept facilitates complete maintenance and assembly, with captured spring assemblies for safety and easy servicing without special tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeats:\u003c\/strong\u003e Equipped with replaceable \u003cstrong\u003estainless steel seats\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSmart \u0026amp; 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Watts is not responsible for data transmission failures due to power issues.\u003c\/em\u003e\u003c\/p\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796836262165,"sku":"88003418","price":22274.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/184238.jpg?v=1772731377"},{"product_id":"6-757-nrs-iot","title":"6 757-NRS-IOT","description":"","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796836720917,"sku":"88003417","price":6702.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/191113.jpg?v=1783348160"},{"product_id":"6-lf709-nrs-iot","title":"6 LF709-NRS-IOT","description":"\u003cp\u003eThis 6 inch \u003cstrong\u003eLead Free Watts LF709-NRS-IOT Double Check Valve Assembly\u003c\/strong\u003e prevents the reverse flow of polluted water from entering potable water systems in non-health hazard installations. 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It is ideal for protection at cross-connections identified as non-health hazards and from other contaminants found at the service line entrance. This compact modular design with a single access sleeve for easy maintenance is approved for horizontal or vertical installation in accordance with the direction of the flow arrow on the assembly. 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It consists of a stainless steel body, tri-link check valves, outside stem and yoke resilient seated gate valves with grooved end connections, and test cocks.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164302315797,"sku":"DDP0112053","price":9361.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193543.jpg?v=1789571422"},{"product_id":"watts-6-757-double-check-valve-assembly-backflow-preventer-ulfm-butterfly-valve-shutoffs-x-post-indicator-valve-36620","title":"Watts 6\" 757 Double Check Valve Assembly Backflow Preventer, UL\/FM Butterfly Valve Shutoffs x Post Indicator Valve","description":"This 6\" lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal for protection at cross-connections identified as non-health hazards and from other contaminants found at the service line entrance. This compact modular design with a single access sleeve for easy maintenance is approved for horizontal or vertical installation in accordance with the direction of the flow arrow on the assembly. It consists of a stainless steel body, tri-link check valves, grooved gear operated butterfly valve by post indicating valve, and test cocks.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164303495445,"sku":"DDP0112080","price":9851.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193550.jpg?v=1789572710"},{"product_id":"watts-6-757-double-check-valve-assembly-backflow-preventer-domestic-nrs-shutoff-valves-36625","title":"Watts 6\" 757 Double Check Valve Assembly Backflow Preventer, Domestic NRS Shutoff Valves","description":"This 6\" stainless steel double check valve backflow preventer assembly is designed to prevent the reverse flow of objectionable but not toxic water from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal for protection at cross-connections identified as non-health hazards and from other contaminants found at the service line entrance. This compact modular design with a single access sleeve for easy maintenance is approved for horizontal or vertical installation in accordance with the direction of the flow arrow on the assembly. It consists of a stainless steel body, tri-link check valves, non-rising stem domestic resilient seated gate valves, and test cocks.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164304281877,"sku":"DDP0792236","price":20597.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193557.jpg?v=1789573440"},{"product_id":"watts-6-757-double-check-valve-assembly-backflow-preventer-nrs-shutoff-valves-grooved-inlet-x-grooved-outlet-36626","title":"Watts 6\" 757 Double Check Valve Assembly Backflow Preventer, NRS Shutoff Valves, Grooved Inlet x Grooved Outlet","description":"This 6\" lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal for protection at cross-connections identified as non-health hazards and from other contaminants found at the service line entrance. This compact modular design with a single access sleeve for easy maintenance is approved for N pattern installation in accordance with the direction of the flow arrow on the assembly. It consists of a stainless steel body, tri-link check valves, non-rising stem resilient seated gate valves with grooved end connections, and test cocks.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164304478485,"sku":"DDP0112059","price":9111.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193558.jpg?v=1789573469"},{"product_id":"watts-6-757-double-check-valve-assembly-backflow-preventer-osy-shutoff-valves-flanged-inlet-x-grooved-outlet-36635","title":"Watts 6\" 757 Double Check Valve Assembly Backflow Preventer, OSY Shutoff Valves, Flanged Inlet x Grooved Outlet","description":"This 6\" lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal for protection at cross-connections identified as non-health hazards and from other contaminants found at the service line entrance. This compact modular design with a single access sleeve for easy maintenance is approved for horizontal or vertical installation in accordance with the direction of the flow arrow on the assembly. It consists of a stainless steel body, tri-link check valves, outside stem and yoke resilient seated gate valves with flanged by grooved end connections, and test cocks.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164306018581,"sku":"DDP0191577","price":9367.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193567.jpg?v=1789573952"},{"product_id":"watts-6-757-double-check-valve-assembly-backflow-preventer-post-indicator-valve-x-osy-shutoff-valves-36637","title":"Watts 6\" 757 Double Check Valve Assembly Backflow Preventer, Post Indicator Valve x OSY Shutoff Valves","description":"This 6\" lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal for protection at cross-connections identified as non-health hazards and from other contaminants found at the service line entrance. This compact modular design with a single access sleeve for easy maintenance is approved for horizontal or vertical installation in accordance with the direction of the flow arrow on the assembly. It consists of a stainless steel body, tri-link check valves, post indicating valve by outside stem and yoke resilient seated gate valve, and test cocks.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164306313493,"sku":"DDP0191582","price":9367.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193571.jpg?v=1789574155"},{"product_id":"watts-6-774-double-check-valve-assembly-backflow-preventer-domestic-osy-shutoff-short-lay-length-36641","title":"Watts 6\" 774 Double Check Valve Assembly Backflow Preventer, Domestic OSY Shutoff, Short Lay Length","description":"This 6\" lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of contaminated water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal for protection at cross-connections identified as non-health hazard applications and from other non-toxic contaminants found at the service line entrance. This compact and short lay length design with a single access cover for easy maintenance is approved with the arrow on the valve body pointing in the direction of the flow for horizontal, vertical and retrofit installations. This assembly consists of a lightweight stainless steel body, domestic outside stem and yoke resilient seated gate valves, torsion spring check valves, and four test cocks.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164306968853,"sku":"DDP0439317","price":12703.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193575.jpg?v=1789574395"},{"product_id":"watts-6-757-double-check-valve-assembly-backflow-preventer-domestic-osy-shutoff-valves-36679","title":"Watts 6\" 757 Double Check Valve Assembly Backflow Preventer, Domestic OSY Shutoff Valves","description":"This 6\" lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal under continuous pressure service and protection at cross-connections identified as non-health hazards and from other non toxic contaminants found at the service line entrance. This compact modular design with a single access sleeve for easy maintenance is approved for horizontal or vertical installation in accordance with the direction of the flow arrow on the assembly. It consists of a stainless steel housing and sleeve, tri-link check valves, domestic outside stem and yoke resilient seated gate valves, and test cocks.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164313129237,"sku":"DDP0113003","price":10581.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193793.jpg?v=1789653819"},{"product_id":"watts-6-774-double-check-valve-assembly-backflow-preventer-domestic-nrs-shutoff-short-lay-length-36685","title":"Watts 6\" 774 Double Check Valve Assembly Backflow Preventer, Domestic NRS Shutoff, Short Lay Length","description":"This 6\" lead free short lay length double check valve backflow preventer assembly is designed to prevent the reverse flow of water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal under continuous pressure service and protection at cross-connections identified as non-health hazards and from other non toxic contaminants found at the service line entrance. This compact modular design with a single access sleeve for easy maintenance is approved for horizontal or vertical installation in accordance with the direction of the flow arrow on the assembly. It consists of a stainless steel housing and sleeve, tri-link check valves, domestic non-rising stem resilient seated gate valves, and test cocks.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164313817365,"sku":"DDP0439303","price":12729.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193799.jpg?v=1789654103"},{"product_id":"watts-6-774-double-check-valve-assembly-backflow-preventer-osy-shutoff-grooved-inlet-x-grooved-outlet-short-lay-length-36690","title":"Watts 6\" 774 Double Check Valve Assembly Backflow Preventer, OSY Shutoff, Grooved Inlet x Grooved Outlet, Short Lay Length","description":"This 6\" lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of contaminated water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal for protection at cross-connections identified as non-health hazard applications and from other contaminants found at the service line entrance. This compact and short lay length design with a single access cover for easy maintenance is approved with the arrow on the valve body pointing in the direction of the flow for horizontal, vertical and retrofit installations. This assembly consists of a lightweight stainless steel body, grooved inlet and outlet gate connections, spring loaded cam-check valves, and test cocks.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164314407189,"sku":"DDP0439509","price":11873.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193806.jpg?v=1789654777"}],"url":"https:\/\/www.backflowpreventer.com\/collections\/backflow-devices-watts-dcva-double-check-valve-assemblies-6.oembed","provider":"Water Specialties Company","version":"1.0","type":"link"}