RK12-420 Repair Kit, Compatible with Zurn Wilkins 420 and 420XL Pressure Vacuum Breaker, Fits 1-inch Models (PVB) Complete Freeze Repair Kit

RK1-420 Repair Kit for 420 Series 1" Pressure Vacuum Breaker (PVB)Restore Sealing: Resolve leaks by replacing the rubber O-rings and gaskets.Rebuild Check Valve: The spring and poppet in the repair kit ensure water flows only towards the showerhead and never backflows.Restore Air Inlet: When line pressure drops, the float sinks to open the air inlet, breaking the vacuum and preventing the siphon effect from drawing dirty water back in.Cost Savings: Replacing the entire relief valve internal parts yourself with a repair kit is much more cost-effective than removing and replacing the entire brass valve assembly.

• 【Compatible with 1-Inch PVB Models】Complete Repair Kit fit for 420 and 420XL series (1-inch models) pressure vacuum breaker. RK1-420 valve relief module repair parts ensures proper internal sealing and valve operation and effectively restore the relief valve's functionality to protect against backsiphonage.
• 【Comprehensive Components】RK1-420 repair kit comes with essential sealing components. The total relief valve repair kit is an exact match for your pvb device. Includes all rubber repair components: seat assembly, float assembly, bonnet, O-Ring and (total 7 parts)
• 【Restore Sealing, and Restore Air Inlet】 For those who want 420/420XL pressure vacuum breaker check valve maintenance. The water leakage caused by the oxidation/freezing damage parts can be solved. Resolve leaks by replacing the rubber O-rings and gaskets. When line pressure drops, the float sinks to open the air inlet, breaking the vacuum and preventing the siphon effect from drawing dirty water back in.
• 【Cost Savings PVB Maintenance】This RK1-420 repair kit for 420 series acts as a replacement of old/overused inner elements. Replacing the entire valve relief yourself with a repair kit is much more cost-effective than removing and re-welding expensive brass valve.
• 【Accessories for speedy Repair】1" complete (PVB) repair kit is easy to install. Even if you're not a professional technician, you can complete the repair with minimal effort and time, getting your PVB Plumbing equipment back up and running.