{"product_id":"wilkins-1-350xl-double-check-valve-assembly","title":"Wilkins 1-350XL | Double Check Valve Assembly","description":"\u003cp\u003e\nThe Wilkins 1-350XL is a double check valve assembly designed for potable water systems to prevent backsiphonage and backpressure of polluted water into the water supply.\n\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eKey Specifications:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eSize:\u003c\/strong\u003e\n    1 Inches\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eMaximum Working Pressure:\u003c\/strong\u003e\n    175 PSI\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eMaximum Working Temperature:\u003c\/strong\u003e\n    180°F\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eNotable Certifications:\u003c\/strong\u003e\n    ASSE 1015, NSF\/ANSI\/CAN 61 \u0026amp; 372\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eEnd Connections:\u003c\/strong\u003e\n    Threaded ANSI B1.20.1\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eOther Related Variants:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003cstrong\u003e34-350XL:\u003c\/strong\u003e\n    3\/4 Inches version\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003e114-350XL:\u003c\/strong\u003e\n    1 1\/4 Inches version\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003e112-350XL:\u003c\/strong\u003e\n    1 1\/2 Inches version\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003e2-350XL:\u003c\/strong\u003e\n    2 Inches version\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eMaterials:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLow Lead Cast Bronze body (ASTM B 584)\u003c\/li\u003e\n  \u003cli\u003eReinforced Nylon housing\u003c\/li\u003e\n  \u003cli\u003eStainless Steel fasteners (300 Series)\u003c\/li\u003e\n  \u003cli\u003eSilicone elastomers (FDA Approved)\u003c\/li\u003e\n  \u003cli\u003eBuna Nitrile elastomers (FDA Approved)\u003c\/li\u003e\n  \u003cli\u003eDelrin internals\u003c\/li\u003e\n  \u003cli\u003eStainless Steel springs (300 Series)\u003c\/li\u003e\n  \u003cli\u003eLow Lead Cast Bronze ball valves (ASTM B 584)\u003c\/li\u003e\n  \u003cli\u003eStainless Steel struts (300 Series)\u003c\/li\u003e\n  \u003cli\u003eStainless Steel handles (200 Series)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eTypical Installation:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp style=\"background: #f8f9fb; padding: 12px 14px; margin: 0; line-height: 1.7; color: #333;\"\u003e\nLocal codes shall govern installation requirements. To be installed in accordance with the manufacturers' instructions and the latest edition of the Uniform Plumbing Code. Unless otherwise specified, the assembly shall be mounted at a minimum of 12 inches and a maximum of 30 inches above adequate drains with sufficient side clearance for testing and maintenance. If installed below grade, be certain adequate drainage is provided to prevent the device from being submerged. Suitable for both indoor and outdoor installation.\n\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eStandards Compliance:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp style=\"background: #f8f9fb; border-left: 4px solid #1d85af; padding: 12px 14px; margin: 0; line-height: 1.7; color: #333;\"\u003e\nASSE Listed 1015; cUPC Listed; CSA Certified B64.5; AWWA Compliant C510; Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California; UL Classified (less shut-off valves only); C-UL Classified (less shut-off valves only); NSF\/ANSI\/CAN 61 \u0026amp; 372\n\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eFeatures \u0026amp; Benefits:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBackflow Prevention:\u003c\/strong\u003e Protects potable water systems against both backsiphonage and backpressure in non-health hazard applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLead-Free Compliance:\u003c\/strong\u003e Certified to NSF\/ANSI\/CAN 61 and 372 with less than 0.25% weighted average lead content for safe drinking water applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Features low lead cast bronze body, reinforced nylon housing, and stainless steel internals for long-lasting performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Maintenance:\u003c\/strong\u003e First and second checks are accessible for maintenance without removing the Zurn 1-350XL device from the line, and includes full port ball valves for convenient operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the hydrostatic test pressure rating for the Zurn 1-350XL?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The hydrostatic test pressure rating is 350 PSI, ensuring robust performance and reliability in potable water systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can this double check valve assembly be installed vertically?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, the assembly is certified for both horizontal and vertical installation according to ASSE 1015 standards.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What accessories are available for the Model 350XL?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Available accessories include repair kits, thermal expansion tank (Model XT), QT-SET Quick Test Fitting Set, and winterizing blow out\/flush fittings.\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cdiv id=\"W3TucRPBpqQA9ARvwg6ni-content\"\u003e\n  \u003cp\u003e\n    \u003cspan\u003e\n      \u003cstrong\u003eNOTICE:\u003c\/strong\u003e\n      Do not use with water that is unsafe or of unknown quality without adequate\n      disinfection either before or after the system.\n    \u003c\/span\u003e\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003e\n  \u003ci\u003e\n    \"Hydrate Everyone, Everywhere!\" BottleFillingStations.com |\n    \u003ca rel=\"noopener\" href=\"https:\/\/bottlefillingstations.com\/pages\/contact-us\" target=\"_blank\"\u003e\n      Contact us\n    \u003c\/a\u003e\n  \u003c\/i\u003e\n\u003c\/p\u003e","brand":"Zurn Wilkins","offers":[{"title":"Default Title","offer_id":42911790104639,"sku":"1-350XL","price":491.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/0985\/files\/1-350XL_AF.jpg?v=1771096341","url":"https:\/\/bottlefillingstations.com\/products\/wilkins-1-350xl-double-check-valve-assembly","provider":"BottleFillingStations.com","version":"1.0","type":"link"}