{"product_id":"zurn-wilkins-350astda-double-check-detector-assembly","title":"Zurn Wilkins 350ASTDA Double Check Detector Assembly","description":"\u003cdiv\u003e\n\u003cp\u003eSafeguard commercial, industrial, and residential fire protection systems against backpressure and backsiphonage with the 350ASTDA Double Check Detector Assembly. This assembly installs directly into supply lines to protect potable water infrastructure from contamination. Featuring dual independent check modules and a metered bypass system, it provides backflow prevention and detects leaks or unauthorized water use. Shutoff configuration varies by selected SKU: BFG options use grooved-end butterfly shutoff valves, while OSY options use OS\u0026amp;Y gate valves.\u003c\/p\u003e \u003cp\u003eTo ensure regulatory compliance and life safety performance, this assembly satisfies the requirements mandated by NFPA 13 and NFPA 25 standards for fire protection system installation and periodic testing. It carries essential third-party agency evaluations including UL and FM approvals alongside ASSE 1015 certification, verifying its performance for demanding installations.\u003c\/p\u003e \u003ch2\u003eKey Features \u0026amp; Construction\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eDurable Body Construction:\u003c\/b\u003e Built from corrosion-resistant high-grade stainless steel and fusion-bonded epoxy-coated ductile iron to extend service life in harsh environments.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDual Check Mechanisms:\u003c\/b\u003e Utilizes two independent, spring-loaded check modules featuring high-strength glass-filled thermoplastics to create a redundant barrier against reverse flow.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eIntegrated Monitoring \u0026amp; Control:\u003c\/b\u003e Features a metered bypass system that detects low-flow demands, leaks, or unauthorized usage. Select grooved-end butterfly shutoffs (BFG) or OS\u0026amp;Y gate valves according to the exact variant SKU and required end connections.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSimplified Maintenance:\u003c\/b\u003e Incorporates accessible internal components and reversible EPDM elastomer seats that allow for servicing without removing the entire valve body from the line.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFlexible Orientation:\u003c\/b\u003e Supports both horizontal and vertical flow-up installation configurations to match job-site piping layouts.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eOperating Parameters:\u003c\/b\u003e Handles maximum working pressures up to 175 PSI and water temperatures ranging from 33°F to 140°F.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical Specifications \u0026amp; Compliance Table\u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse: collapse; width: 100%;\"\u003e \u003cthead\u003e \u003ctr style=\"background-color: #f2f2f2;\"\u003e \u003cth\u003e\u003cb\u003eTechnical Field\u003c\/b\u003e\u003c\/th\u003e \u003cth\u003e\u003cb\u003eSpecification Details\u003c\/b\u003e\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eManufacturer \/ Brand\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eZurn Wilkins\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eModel \/ Series Number \/ SIN\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003e350ASTDA\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eConnection \/ Thread Size \u0026amp; Type\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eANSI Flanged and AWWA Grooved Ends\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003ePressure Rating (WWP)\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003e175 PSI Max Working Pressure\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eK-Factor\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eN\/A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eTemperature Rating \/ Response Type\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003e33°F to 140°F\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eMaterial \/ Body Construction\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eStainless Steel and Fusion-Bonded Epoxy-Coated Ductile Iron\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eAgency Listings \u0026amp; Approvals\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eUL Listed, FM Approved, ASSE 1015 Certified\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eApplicable NFPA Standards\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eNFPA 13, NFPA 25\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e\n\u003c\/table\u003e \u003cp\u003eContractors and facility managers must verify local Authority Having Jurisdiction (AHJ) requirements and consult the official Zurn specification sheet for complete engineering data and sizing guidelines prior to system installation.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eDocumentation:\u003c\/strong\u003e \u003ca href=\"#\"\u003eDownload Manufacturer Technical Data \u0026amp; Cut Sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Zurn Wilkins","offers":[{"title":"2-1\/2 in. \/ BFG","offer_id":48905971695864,"sku":"350ASTDABG-0250","price":4198.99,"currency_code":"USD","in_stock":true},{"title":"2-1\/2 in. \/ OSY G X G","offer_id":48905971728632,"sku":"350ASTDAOSYG-0250","price":4660.99,"currency_code":"USD","in_stock":true},{"title":"2-1\/2 in. \/ OS\u0026Y F X F","offer_id":48905971761400,"sku":"350ASTDAOSY-0250","price":4564.99,"currency_code":"USD","in_stock":true},{"title":"3 in. \/ OSY F X G","offer_id":48905972187384,"sku":"350ASTDAOSYFG-0300","price":4803.99,"currency_code":"USD","in_stock":true},{"title":"3 in. \/ BFG","offer_id":48905972220152,"sku":"350ASTDABG-0300","price":4439.99,"currency_code":"USD","in_stock":true},{"title":"4 in. \/ BFG","offer_id":48905971794168,"sku":"350ASTDABG-0400","price":4573.99,"currency_code":"USD","in_stock":true},{"title":"4 in. \/ OSY G X G","offer_id":48905971859704,"sku":"350ASTDAOSYG-0400","price":4840.99,"currency_code":"USD","in_stock":true},{"title":"4 in. \/ OSY F X F","offer_id":48905971826936,"sku":"350ASTDAOSY-0400","price":4608.99,"currency_code":"USD","in_stock":true},{"title":"4 in. \/ OSY F X G","offer_id":48905971892472,"sku":"350ASTDAOSYFG-0400","price":4840.99,"currency_code":"USD","in_stock":true},{"title":"6 in. \/ OSY G X G","offer_id":48905971958008,"sku":"350ASTDAOSYG-0600","price":7169.99,"currency_code":"USD","in_stock":true},{"title":"6 in. \/ OSY F X F","offer_id":48905971925240,"sku":"350ASTDAOSY-0600","price":6829.99,"currency_code":"USD","in_stock":true},{"title":"6 in. \/ OSY F X G","offer_id":48905971990776,"sku":"350ASTDAOSYFG-0600","price":7169.99,"currency_code":"USD","in_stock":true},{"title":"8 in. \/ BFG","offer_id":48905972023544,"sku":"350ASTDABG-0800","price":12191.99,"currency_code":"USD","in_stock":true},{"title":"8 in. \/ OSY G X G","offer_id":48905972089080,"sku":"350ASTDAOSYG-0800","price":13267.99,"currency_code":"USD","in_stock":true},{"title":"8 in. \/ OSY F X F","offer_id":48905972056312,"sku":"350ASTDAOSY-0800","price":12634.99,"currency_code":"USD","in_stock":true},{"title":"8 in. \/ OSY F X G","offer_id":48905972121848,"sku":"350ASTDAOSYFG-0800","price":13267.99,"currency_code":"USD","in_stock":true},{"title":"10 in. \/ OSY F X F","offer_id":48905972154616,"sku":"350ASTDAOSY-1000","price":22901.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0682\/7183\/3336\/files\/350astda-dbl-chk-detector-bckflw-preventer-778095.jpg?v=1774498697","url":"https:\/\/fireprotectionparts.net\/fr\/products\/zurn-wilkins-350astda-double-check-detector-assembly","provider":"Fire Protection Parts","version":"1.0","type":"link"}