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The maximum working pressure is 175 psi (12.06 bar).","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164285735189,"sku":"DDP0111552","price":9300.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193750.jpg?v=1789650866"},{"product_id":"watts-4-757dcda-double-check-detector-assembly-backflow-preventer-ulfm-butterfly-valve-shutoffs-gallonsminute-meter-36538","title":"Watts 4\" 757DCDA Double Check Detector Assembly Backflow Preventer, UL\/FM Butterfly Valve Shutoffs, Gallons\/Minute Meter","description":"This 4\" double check detector backflow preventer assembly prevents the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating tri-link check valves, two UL\/FM butterfly shutoff valves, and four test cocks. It has a gallons per minute meter. It features a stainless steel housing and sleeve and is 70 percent lighter than traditional designs. It is designed for non-health hazard applications and may be installed under continuous pressure service to protect against both backpressure and backsiphonage. It is used primarily on fire sprinkler lines when it is necessary to monitor unauthorized use of water. The maximum working pressure is 175 psi (12.06 bar).","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164286030101,"sku":"DDP0111574","price":9813.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193752.jpg?v=1789650955"},{"product_id":"watts-4-774dcda-double-check-detector-assembly-backflow-preventer-osy-shutoff-cubic-feet-meter-short-lay-length-36543","title":"Watts 4\" 774DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff, Cubic Feet Meter, Short Lay Length","description":"This double check detector assembly backflow preventer, 4\", prevents the backflow of fire protection system substances from being pumped or siphoned into the potable water supply. It consists of a compact construction and short lay length, ideal for retrofit installations. It features a lightweight stainless steel body, thermoplastic and stainless steel check valves, and low head loss. It has a cubic foot meter. It can be installed in a vertical or horizontal flow-up position. It is designed for installation on applications identified by local authorities as non-health hazard, such as on fire protection systems. The maximum working pressure is 175 psi (12.06 bar).","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164287078677,"sku":"DDP0438004","price":12078.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193757.jpg?v=1789651470"},{"product_id":"watts-4-757dcda-double-check-detector-assembly-backflow-preventer-osy-shutoff-valves-cubic-feet-meter-n-pattern-36565","title":"Watts 4\" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valves, Cubic Feet Meter, N Pattern","description":"This 4\", N pattern, double check detector backflow preventer assembly prevents the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating tri-link check valves, two shutoff valves, and four test cocks. It has a cubic foot meter. It features a stainless steel housing and sleeve and is 70 percent lighter than traditional designs. It is designed for non-health hazard applications and may be installed under continuous pressure service to protect against both backpressure and backsiphonage. It is used primarily on fire sprinkler lines when it is necessary to monitor unauthorized use of water. The maximum working pressure is 175 psi (12.06 bar).","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164291535125,"sku":"DDP0111558","price":13188.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193779.jpg?v=1789652446"},{"product_id":"watts-4-757dcda-double-check-detector-assembly-backflow-preventer-domestic-osy-shutoff-valves-gallonsminute-meter-36567","title":"Watts 4\" 757DCDA Double Check Detector Assembly Backflow Preventer, Domestic OSY Shutoff Valves, Gallons\/Minute Meter","description":"This 4\" double check detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non-potable quality, but not toxic, 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 such as on fire protection systems and from other contaminants found at the service line entrance. This compact modular design with a single access cover for easy maintenance is approved for horizontal and vertical flow up installation. It consists of a light weight stainless steel body and sleeve, domestic outside stem and yoke resilient seated gate valves, captured spring check valves, a gallons per minute metered bypass to detect underground leaks and unauthorized water use, and four test cocks.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164291895573,"sku":"DDP0113016","price":10505.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193489.jpg?v=1789568450"},{"product_id":"watts-4-757dcda-double-check-detector-assembly-backflow-preventer-domestic-osy-shutoff-valves-gallonsminute-meter-n-pattern-36580","title":"Watts 4\" 757DCDA Double Check Detector Assembly Backflow Preventer, Domestic OSY Shutoff Valves, Gallons\/Minute Meter, N Pattern","description":"This 4\" N pattern double check detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non-potable quality, but not toxic, 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 such as on fire protection systems and from other contaminants found at the service line entrance. This compact modular design with a single access cover for easy maintenance is approved for horizontal and vertical flow up installation. It consists of a light weight stainless steel body and sleeve, domestic outside stem and yoke resilient seated gate valves, captured spring check valves, a gallons per minute metered bypass to detect underground leaks and unauthorized water use, and four test cocks.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":50164294779157,"sku":"DDP0113024","price":14901.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/193505.jpg?v=1789569325"}],"url":"https:\/\/www.backflowpreventer.com\/collections\/backflow-devices-watts-dcda-double-check-detector-assemblies-4.oembed?page=2","provider":"Water Specialties Company","version":"1.0","type":"link"}