{"product_id":"wilkins-34-420xl-pressure-vacuum-breaker-with-anti-freeze-relief-valve","title":"Wilkins 34-420XL | Pressure Vacuum Breaker with Anti-Freeze Relief Valve","description":"\u003cp\u003e\nThe Wilkins 34-420XL is a pressure vacuum breaker assembly with integral anti-freeze relief valve designed to protect potable water systems against backsiphonage in continuous pressure applications.\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    3\/4 Inches\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eMaximum Working Water Pressure:\u003c\/strong\u003e\n    175 PSI\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eMaximum Working Water Temperature:\u003c\/strong\u003e\n    140°F\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eNotable Certifications:\u003c\/strong\u003e\n    ASSE 1020, NSF\/ANSI 372\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eThreaded Connections:\u003c\/strong\u003e\n    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\u003e1-420XL:\u003c\/strong\u003e\n    1 Inch model size\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\u003eCast Bronze ASTM B 584 main valve body\u003c\/li\u003e\n  \u003cli\u003eSilicone FDA Approved elastomers\u003c\/li\u003e\n  \u003cli\u003eBuna Nitrile elastomers\u003c\/li\u003e\n  \u003cli\u003ePolypropylene FDA Approved polymers\u003c\/li\u003e\n  \u003cli\u003ePOM Acetal (Delrin) polymers\u003c\/li\u003e\n  \u003cli\u003ePPE (Noryl) polymers\u003c\/li\u003e\n  \u003cli\u003eStainless Steel 300 Series springs\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. Unless otherwise specified, the assembly shall be installed in accordance with the manufacturers' instructions and the latest edition of the Uniform Plumbing Code. The assembly shall be mounted at a minimum of 12 inches above the highest piping or outlet downstream of the device. Install with adequate drain and sufficient side clearance for testing and maintenance. The installation shall be made so that no part of the unit can be submerged. A pressure vacuum breaker cannot be installed where back-pressure could occur or where spillage of water from vent could cause damage.\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 1020; UPC Listed; CSA Certified B64.1.2; Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California; NSF\/ANSI\/CAN 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\u003eBacksiphonage Protection:\u003c\/strong\u003e Protects potable water supply against contaminated water backsiphonage in continuous pressure applications where health hazards exist.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFreeze Protection Design:\u003c\/strong\u003e Integral anti-freeze relief valve reduces risk of valve damage under intermittent, non-seasonal freezing conditions for indoor or outdoor installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Maintenance:\u003c\/strong\u003e Replaceable thermoplastic modular cartridge allows entire assembly to be accessible for maintenance and testing without removing device from the line.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLead-Free Compliance:\u003c\/strong\u003e Low lead bronze construction meets NSF\/ANSI\/CAN 372 requirements with less than 0.25% weighted average lead content for safe potable water applications.\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 minimum installation height requirement for the Wilkins 34-420XL?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The Zurn 34-420XL assembly must be mounted at a minimum of 12 inches above the highest piping or outlet downstream of the device to ensure proper operation and protection.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can the Zurn 34-420XL be installed where back-pressure could occur?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, a pressure vacuum breaker cannot be installed where back-pressure could occur or where spillage of water from vent could cause damage. It is designed only for backsiphonage protection under continuous pressure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What materials are used in the construction of the Wilkins 34-420XL?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The assembly features a low lead cast bronze body (ASTM B 584), FDA approved silicone and Buna Nitrile elastomers, FDA approved polypropylene and other thermoplastic polymers, and stainless steel 300 series springs for durability and compliance.\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":42914903916607,"sku":"34-420XL","price":293.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/0985\/files\/34-420XL_F.jpg?v=1771002915","url":"https:\/\/bottlefillingstations.com\/products\/wilkins-34-420xl-pressure-vacuum-breaker-with-anti-freeze-relief-valve","provider":"BottleFillingStations.com","version":"1.0","type":"link"}