{"product_id":"zurn-wilkins-rk4-350-repair-kit-for-2-12-4-backflow-preventers","title":"Wilkins RK4-350 | Repair Kit for 2-1\/2\" - 4\" Backflow Preventers","description":"\u003cp\u003e\nThe Wilkins RK4-350 is a standard repair kit designed to restore backflow prevention function for 2-1\/2\" - 4\" Model 350A\/375\/475 assemblies.\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\u003eCompatible Sizes:\u003c\/strong\u003e\n    2-1\/2\" - 4\"\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eCompatible Models:\u003c\/strong\u003e\n    350A\/375\/475 and 350\/450\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eKit Components:\u003c\/strong\u003e\n    Two check O-rings, seals\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eNotable Certifications:\u003c\/strong\u003e\n    ASSE 1015, CSA B64.5\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eMaterial Compliance:\u003c\/strong\u003e\n    Lead-Free\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\u003eRK1-350:\u003c\/strong\u003e\n    1 Inches version with check assemblies\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eRK34-350:\u003c\/strong\u003e\n    3\/4 Inches version with check assemblies\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eRK212-350:\u003c\/strong\u003e\n    2 1\/2 Inches version\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eRK6-350:\u003c\/strong\u003e\n    6 Inches version\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eRK8-350:\u003c\/strong\u003e\n    8\" - 12\" 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\u003eLead-Free compliant materials\u003c\/li\u003e\n  \u003cli\u003eO-ring sealing components\u003c\/li\u003e\n  \u003cli\u003eSeal rings\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\nUsed for repairing and maintaining backflow prevention assemblies in commercial and residential plumbing systems where potable water protection is required. Suitable for servicing existing Wilkins Model 350A, 375, 475, 350, and 450 backflow preventers to restore proper sealing and prevent contamination of water supply systems.\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 1015; CSA B64.5\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\u003eComplete Repair Solution:\u003c\/strong\u003e Includes two check O-rings, eight poppet bolt O-rings, and two seal rings for comprehensive repair without full assembly replacement.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLead-Free Compliance:\u003c\/strong\u003e Meets lead-free material requirements ensuring safe potable water contact and regulatory compliance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCost-Effective Maintenance:\u003c\/strong\u003e Allows quick repair of internal seals to restore Zurn RK4-350 backflow prevention function while avoiding expensive full assembly replacement.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards Certified:\u003c\/strong\u003e Complies with ASSE 1015 and CSA B64.5 standards for reliable backflow prevention performance.\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: Which backflow preventer models is the Zurn RK4-350 compatible with?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This repair kit is designed for 2-1\/2\" - 4\" Model 350A\/375\/475 backflow preventers and 4\" Model 350\/450 assemblies.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What components are included in the Wilkins RK4-350 repair kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The kit includes two check O-rings, eight poppet bolt O-rings, and two seal rings for complete internal seal replacement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this repair kit lead-free compliant?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, the RK4-350 is manufactured with lead-free materials and complies with ASSE 1015 and CSA B64.5 standards for safe potable water applications.\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":42911794036799,"sku":"RK4-350","price":152.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/0985\/files\/RK4-350_AF.png?v=1770491904","url":"https:\/\/bottlefillingstations.com\/products\/zurn-wilkins-rk4-350-repair-kit-for-2-12-4-backflow-preventers","provider":"BottleFillingStations.com","version":"1.0","type":"link"}