The Zurn Wilkins RK1‑720A Pressure Vacuum Breaker Repair Kit and the RK1‑720APK provide OEM replacement parts for maintaining Wilkins Model 720A assemblies. These kits restore proper function by replacing worn internal components.
Key Installation Requirements:
- Shut off inlet and outlet valves before servicing
- Depressurize system by opening test cocks
- Install kit components in vertical orientation as designed
- Ensure accessibility for testing and servicing after installation
- Follow local codes and regulations for backflow prevention devices
Important Notes Before Installing:
- Repairs must be performed by qualified, licensed personnel
- Do not install where backpressure may occur — 720A is for backsiphonage protection only
- Provide drainage if installed indoors to handle air vent discharge
- Protect unit from freezing; remove internal components or drain system during winterization
- Annual inspection and testing are required to maintain compliance
- Use only genuine Zurn Wilkins parts to ensure certification and performance
Basic Repair Overview:
- Close inlet and outlet shut‑off valves
- Remove canopy screws and canopy
- Bleed pressure using test cock #2
- Unscrew bonnet and remove disc, poppet, spring, and spider assembly
- Clean all parts with fresh water; replace worn components with kit parts
- Reassemble unit and retest according to standard test procedures
For complete step‑by‑step instructions, download the official Zurn Wilkins 720A Installation & Maintenance Manual and the Repair Kits Guide.
Want to Order the RK1‑720A or RK1‑720APK Repair Kit?