{"title":"Backflow Devices - Wilkins - DCDA - Double Check Detector Assemblies - 4\"","description":null,"products":[{"product_id":"4-350-dcda-di-body-gal-mtr-osy-flg-x-flg","title":"4 350 DCDA DI BODY GAL MTR OSY FLG X FLG","description":"The 4\" 350DA Double Check Detector Backflow Assembly, with flanged end OS\u0026amp;Y gate valves, protects against backsiphonage and backpressure in low health hazard, fire protection applications. Featuring a metered bypass system, the 350DA efficiently and effectively detects leaks and any unauthorized water use, saving you added costs associated with maintenance and repairs. The Zurn Wilkins Compound Check provides low headloss, and backflow installation is approved in both horizontal and vertical positions.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796848419093,"sku":"4-350DA","price":10625.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/184518.jpg?v=1772731881"},{"product_id":"4-450-dcda-ss-body-n-pattern-bfly-grv-x-grv","title":"4 450 DCDA SS BODY N PATTERN BFLY GRV X GRV","description":"\u003cp\u003eThis Zurn Wilkins Model 450STDA is a 4-inch Double Check Detector Assembly (DCDA) designed for installation on water lines in \u003cstrong\u003efire protection systems\u003c\/strong\u003e. It prevents the backflow and backsiphonage of polluted water into potable water supplies where a potential health hazard does not exist.\u003c\/p\u003e\u003cp\u003eThe assembly incorporates a \u003cstrong\u003emetered bypass\u003c\/strong\u003e to detect leaks and monitor unauthorized water use. Its superior \u003cstrong\u003e304L stainless steel body\u003c\/strong\u003e resists corrosion, extending the product's life, and its compact footprint allows for direct drop-in replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplication \u0026amp; Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDesigned for \u003cstrong\u003enew installations\u003c\/strong\u003e or as a \u003cstrong\u003edirect drop-in replacement\u003c\/strong\u003e for competitor valves.\u003c\/li\u003e\n\u003cli\u003eProtects against backflow and backsiphonage of polluted water.\u003c\/li\u003e\n\u003cli\u003eFeatures a \u003cstrong\u003emetered by-pass\u003c\/strong\u003e assembly for leak detection and monitoring water use.\u003c\/li\u003e\n\u003cli\u003ePatented \u003cstrong\u003eAR spool\u003c\/strong\u003e allows for flexible drop-in replacements, matching lay-lengths of common n-pattern valves while maintaining agency approvals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatented compound checks\u003c\/strong\u003e provide ultra-low pressure drop, potentially reducing the need for a booster pump.\u003c\/li\u003e\n\u003cli\u003eSupplied with \u003cstrong\u003egrooved end butterfly valves\u003c\/strong\u003e that include integral supervisory switches.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction Materials\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMain valve body and access covers made from \u003cstrong\u003e304L Stainless Steel\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eInternals are Stainless steel and NORYL™, NSF Listed.\u003c\/li\u003e\n\u003cli\u003eFasteners and springs are Stainless Steel, 300 Series.\u003c\/li\u003e\n\u003cli\u003eSeal ring is \u003cstrong\u003eEPDM (FDA approved)\u003c\/strong\u003e and O-ring is \u003cstrong\u003eBuna Nitrile (FDA approved)\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796848648469,"sku":"4-450STDABG","price":14503.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/191327.jpg?v=1783353518"},{"product_id":"4-350-dcda-di-body-grv-body-grv-x-grv-less-gate-valves","title":"4 350 DCDA DI BODY, GRV BODY, GRV X GRV, LESS GATE VALVES","description":"\u003cp\u003eThe 4 inch Zurn 350ADA Double Check Detector Backflow Preventer is designed to protect against \u003cstrong\u003ebacksiphonage\u003c\/strong\u003e and \u003cstrong\u003ebackpressure\u003c\/strong\u003e in low health hazard, \u003cstrong\u003efire protection applications\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003eThis backflow preventer features a \u003cstrong\u003emetered bypass system\u003c\/strong\u003e to efficiently detect leaks and unauthorized water use, helping to reduce potential costs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetered bypass system\u003c\/strong\u003e for leak and unauthorized water use detection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle access cover\u003c\/strong\u003e design reduces downtime and maintenance costs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact, short lay-length\u003c\/strong\u003e for versatile installation in horizontal or vertical positions\u003c\/li\u003e\n\u003cli\u003eLighter in weight compared to the 350DA Model\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatented Compound Check\u003c\/strong\u003e ensures reliable performance and improved flow characteristics\u003c\/li\u003e\n\u003cli\u003eAbsence of threads or taps in the cover and body minimizes corrosion exposure\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796849402133,"sku":"4-350ADAL","price":7195.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/191343.jpg?v=1783355637"},{"product_id":"4-350-dcda-di-body-gal-mtr-bfly-grv-x-grv","title":"4 350 DCDA DI BODY GAL MTR BFLY GRV X GRV","description":"The 4\" 350ADABG Double Check Detector Backflow Assembly, with grooved end butterfly valves with integral supervisory switches, protects against both backsiphonage and backpressure in low health hazard, fire protection applications. Featuring a metered bypass system, the 350ADA efficiently detects leaks and any unauthorized water use. Its single access cover reduces down time and added costs associated with maintenance and repairs. Lighter in weight than the 350DA Model, the 350ADA features a short lay-length for compact, versatile installation in horizontal or vertical positions.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796851695893,"sku":"4-350ADABG","price":11700.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/184577.jpg?v=1772732040"},{"product_id":"4-450-dcda-di-body-gal-mtr-osy-flg-x-flg","title":"4 450 DCDA DI BODY GAL MTR OSY FLG X FLG","description":"The 4\" 450DA Double Check Detector Backflow Assembly protects against both backsiphonage and backpressure on water lines in low health hazard, fire protection applications. Shaped in the n-Pattern, the 450DA is ideal for both new and retrofit installations in tight  locations. It features an innovative metered bypass system to efficiently and effectively detect leaks and any unauthorized water use and the epoxy-coated ductile iron body protects against corrosion and utilizes the Zurn Wilkins Compound Check which provides low headloss.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796851925269,"sku":"4-450DA","price":13358.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/184587.jpg?v=1772732033"},{"product_id":"4-350-dcda-di-body-gal-mtr-osy-flg-x-flg-1","title":"4 350 DCDA DI BODY GAL MTR OSY FLG X FLG","description":"The 4\" 350ADA Double Check Detector Backflow Assembly, with flanged end OS\u0026amp;Y gate valves, protects against both backsiphonage and backpressure in low health hazard, fire protection applications. Featuring a metered bypass system, the 350ADA efficiently detects leaks and any unauthorized water use. Its single access cover reduces down time and added costs associated with maintenance and repairs. Lighter in weight than the 350DA Model, the 350ADA features a short lay-length for compact, versatile installation in horizontal or vertical positions.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796852154645,"sku":"4-350ADA","price":10625.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/184586.jpg?v=1772732044"},{"product_id":"4-450-dcda-di-body-gal-mtr-less-gate-valves","title":"4 450 DCDA DI BODY GAL MTR, LESS GATE VALVES","description":"\u003cp\u003eThe 4-inch Zurn Wilkins 450DA Double Check Detector Backflow Assembly is designed to protect water lines from both backsiphonage and backpressure in low health hazard and fire protection applications. Its n-Pattern shape makes it ideal for new installations and retrofits where space is limited.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIncorporates an innovative \u003cstrong\u003emetered bypass system\u003c\/strong\u003e for efficient detection of leaks and unauthorized water use.\u003c\/li\u003e\n\u003cli\u003eEquipped with a \u003cstrong\u003eZurn Wilkins Compound Check\u003c\/strong\u003e which ensures reliable performance and low headloss.\u003c\/li\u003e\n\u003cli\u003eThe body is constructed from \u003cstrong\u003eepoxy-coated ductile iron\u003c\/strong\u003e, providing robust protection against corrosion.\u003c\/li\u003e\n\u003cli\u003eIts \u003cstrong\u003ecompact n-Pattern design\u003c\/strong\u003e facilitates easy installation in tight spaces and enclosures.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e \u003cem\u003eThis model is supplied without gate valves. Compatible gate valves must be purchased separately for installation.\u003c\/em\u003e\u003c\/p\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796853334293,"sku":"4-450DAL","price":10774.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/191201.jpg?v=1783349585"},{"product_id":"4-350-dcda-di-body-gal-mtr-less-gate-valves","title":"4 350 DCDA DI BODY GAL MTR, LESS GATE VALVES","description":"\u003cp\u003eThe Zurn Wilkins Model 350DA Double Check Detector Backflow Assembly protects against \u003cstrong\u003ebacksiphonage\u003c\/strong\u003e and \u003cstrong\u003ebackpressure\u003c\/strong\u003e in low health hazard, fire protection applications. This assembly is designed for installation on water lines in fire protection systems and incorporates a \u003cstrong\u003emetered bypass system\u003c\/strong\u003e to detect leaks and unauthorized water use, helping to save costs.\u003c\/p\u003e\u003cp\u003eThe patented Zurn Wilkins \u003cstrong\u003eCompound Check\u003c\/strong\u003e provides low headloss, and installation is approved in both \u003cstrong\u003ehorizontal and vertical positions\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplication \u0026amp; Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDesigned to protect potable water supply from pollution where a potential health hazard does not exist\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetered bypass system\u003c\/strong\u003e detects leaks and unauthorized water usage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompound Check\u003c\/strong\u003e offers reliable performance and improved flow characteristics with low headloss\u003c\/li\u003e\n\u003cli\u003eSuitable for both \u003cstrong\u003ehorizontal and vertical installation\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFirst and second check valves are accessible for maintenance without removing the device from the line\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eMaterials\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMain Valve Body: \u003cstrong\u003eDuctile Iron\u003c\/strong\u003e (ASTM A536)\u003c\/li\u003e\n\u003cli\u003eAccess Covers: \u003cstrong\u003eDuctile Iron\u003c\/strong\u003e (ASTM A536)\u003c\/li\u003e\n\u003cli\u003eCoatings: \u003cstrong\u003eNSF Approved fusion epoxy finish\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eInternals: \u003cstrong\u003eStainless Steel\u003c\/strong\u003e (300 Series), \u003cstrong\u003eNORYL™\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFasteners: \u003cstrong\u003eStainless Steel\u003c\/strong\u003e (300 Series)\u003c\/li\u003e\n\u003cli\u003eElastomers: \u003cstrong\u003eEPDM\u003c\/strong\u003e (FDA approved), \u003cstrong\u003eBuna Nitrile\u003c\/strong\u003e (FDA approved)\u003c\/li\u003e\n\u003cli\u003ePolymers: \u003cstrong\u003eNORYL™\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSprings: \u003cstrong\u003eStainless Steel\u003c\/strong\u003e (300 Series)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796853661973,"sku":"4-350DAL","price":7195.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/191204.jpg?v=1783349645"},{"product_id":"4-450-dcda-ss-body-n-pattern-osy-flg-x-flg","title":"4 450 DCDA SS BODY N PATTERN OSY FLG X FLG","description":"The Zurn Wilkins 450STDA Stainless Steel n-Pattern Double Check Detector Assembly (DCDA) withstands the corrosive effects of water and is ideal for new or direct drop-in replacement delivering convenience without compromise. For fire protection applications , with a metered by-pass to detect leaks and other water use.","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796857692437,"sku":"4-450STDA","price":14506.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/191252.jpg?v=1783351119"},{"product_id":"4-450-dcda-di-body-gal-mtr-bfly-grv-x-grv","title":"4 450 DCDA DI BODY GAL MTR BFLY GRV X GRV","description":"\u003cp\u003eThe Zurn Wilkins 450DA Double Check Detector Backflow Assembly is designed to protect water lines in low health hazard and fire protection applications from both backsiphonage and backpressure.\u003c\/p\u003e\u003cp\u003eThis 4-inch model features an \u003cstrong\u003en-Pattern\u003c\/strong\u003e design for flexible installation in tight spaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eN-Pattern\u003c\/strong\u003e configuration is ideal for compact enclosures and easy retrofit installations.\u003c\/li\u003e\n\u003cli\u003eIncludes an innovative \u003cstrong\u003emetered bypass system\u003c\/strong\u003e to detect leaks and unauthorized water usage efficiently.\u003c\/li\u003e\n\u003cli\u003eThe \u003cstrong\u003eepoxy-coated ductile iron body\u003c\/strong\u003e provides robust protection against corrosion.\u003c\/li\u003e\n\u003cli\u003eUtilizes the patented \u003cstrong\u003eWilkins Compound Check\u003c\/strong\u003e for reliable performance, improved flow characteristics, and low headloss.\u003c\/li\u003e\n\u003cli\u003eComes standard with \u003cstrong\u003eOS\u0026amp;Y gate valves\u003c\/strong\u003e for versatile end connection options.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead-free\u003c\/strong\u003e construction.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796860051733,"sku":"4-450DABG","price":14705.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/191284.jpg?v=1783351698"}],"url":"https:\/\/www.backflowpreventer.com\/collections\/backflow-devices-wilkins-dcda-double-check-detector-assemblies-4.oembed","provider":"Water Specialties Company","version":"1.0","type":"link"}