Complete Repair Kit for Zurn Wilkins 1" Model 420 / 420XL PVB Is your irrigation system leaking or losing pressure? The RK1-420 repair kit is the professional-grade solution to restore your 1" Pressure Vacuum Breaker to its original efficiency without the expense of a full replacement. Why Choose This Kit? Precision Engineering: Every component is designed to fit 1" 420/420XL series assemblies perfectly, ensuring a seamless repair and airtight sealing. Mechanical Integrity: Restores the vital relief functions and float buoyancy required for standard vacuum breaker performance, keeping your system running smoothly. High-End Materials: Made with durable, long-life materials that resist wear and corrosion, even in demanding outdoor irrigation environments. Simple DIY Installation: Our user-friendly kit allows maintenance professionals and homeowners alike to perform a full overhaul in minutes using standard household tools. Specifications: Compatibility: For Zurn Wilkins 1" 420 & 420XL Pressure Vacuum Breakers. Everything for a Complete Rebuild: This kit contains a full set of internal components — (1) Seat Assembly, (1) Float Assembly, (1) Bonnet, (1) O-Ring, and Lubricant. It also includes (1) bonus Canopy and Screw for exterior protection.