{"product_id":"zurn-wilkins-rk4-375astck1-1-check-assembly-repair-kit","title":"Wilkins RK4-375ASTCK1 | #1 Check Assembly Repair Kit","description":"\u003cp\u003e\nThe Wilkins RK4-375ASTCK1 is a comprehensive #1 check assembly repair kit designed to restore first check valve sealing and operation in backflow preventers without requiring full unit replacement.\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    2 1\/2 to 4 Inches\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eKit Contents:\u003c\/strong\u003e\n    Check assembly, retainer, lubricant\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eCompatibility:\u003c\/strong\u003e\n    Models 375AST, 375ASTDA, 475ST, 475STDA\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eFunction:\u003c\/strong\u003e\n    First check valve repair\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003eWarranty:\u003c\/strong\u003e\n    1-year limited warranty\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\u003eRK4-375ASTCK2:\u003c\/strong\u003e\n    #2 Check Assembly Repair Kit\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\u003eCheck assembly components\u003c\/li\u003e\n  \u003cli\u003eRetainer hardware\u003c\/li\u003e\n  \u003cli\u003eAssembly lubricant\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 repair and maintenance of the first check assembly in backflow prevention systems including commercial buildings, industrial facilities, irrigation systems, and potable water supply protection applications where Models 375AST, 375ASTDA, 475ST, and 475STDA backflow preventers are installed.\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\nCompatible with assemblies meeting ASSE 1013, USC FCCCHR, AWWA C511 standards for reduced pressure principle backflow prevention assemblies\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\u003eCost-Effective Repair:\u003c\/strong\u003e Allows repair without replacing entire backflow preventer, reducing maintenance costs and downtime.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Includes all necessary components—check assembly, retainer, and lubricant—for comprehensive first check valve restoration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Fits multiple Zurn RK4-375ASTCK1 compatible models including 375AST, 375ASTDA, 475ST, and 475STDA in 2-1\/2 inch to 4 inch sizes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReliable Performance:\u003c\/strong\u003e Restores proper first check valve sealing and operation, ensuring continued backflow prevention system integrity and compliance.\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 backflow preventer models is this Zurn RK4-375ASTCK1 repair kit compatible with?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This kit is designed for 2-1\/2 inch to 4 inch Models 375AST, 375ASTDA, 475ST, and 475STDA backflow preventers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What components are included in this repair kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The kit includes the #1 check assembly, retainer hardware, and assembly lubricant needed for complete first check valve repair.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I repair just the first check valve without replacing the entire backflow preventer?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, this repair kit allows you to restore first check valve sealing and operation without replacing the entire backflow prevention assembly, saving time and cost.\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":42934992109631,"sku":"RK4-375ASTCK1","price":545.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/0985\/files\/RK4-375ASTCK1_ATR_5a1be0a5-afe2-4f6b-9a20-9224d0573e5e.jpg?v=1771502164","url":"https:\/\/bottlefillingstations.com\/products\/zurn-wilkins-rk4-375astck1-1-check-assembly-repair-kit","provider":"BottleFillingStations.com","version":"1.0","type":"link"}