Quick Summary
The RK12-420 PVB repair kit is made for Zurn Wilkins 420 and 420XL pressure vacuum breaker assemblies in 1/2″ and 3/4″ sizes. It is a repair kit for freeze damage and worn internal parts, with replacement components intended to restore the valve assembly.
The kit is described as including multiple internal parts plus the canopy and screw, so it is worth checking that the valve model, size, and included contents match the exact repair job before choosing an offer.
Key Details
| Detail | Product information and buyer relevance | |
|---|---|---|
| Product type | PVB repair kit for servicing compatible vacuum breaker assemblies. | |
| Compatible models | Zurn Wilkins 420 and 420XL. | Confirm the valve model before buying. |
| Size | 1/2″ and 3/4″. | Match the size to the assembly being repaired. |
| Included parts | Seat assembly, float assembly, bonnet, O-rings, relief valve assembly, air inlet disc, poppet, seal ring, lubricant, canopy and screw. | Check the selected kit contents against the repair you need. |
| Replacement references | 421-180, 421-340, 421-20 and 034N O-ring are named replacement references. | Useful when matching individual service parts. |
What to Compare Before Buying
- Valve model: This kit is made for Wilkins 420 and 420XL assemblies. Compare that model designation with the valve you plan to repair.
- Size: The stated fit is 1/2″ and 3/4″. Match the size to the exact assembly.
- Included parts: The kit includes several internal parts plus the canopy and screw. Compare the contents with the parts you need to replace.
- Repair scope: This is a repair kit rather than a complete new valve. Make sure repair parts are the right choice for your situation.
Who This Product May Suit
This kit is for buyers working on a Zurn Wilkins 420 or 420XL pressure vacuum breaker in 1/2″ or 3/4″ size. It fits situations where the valve needs internal repair parts after freeze damage or wear.
Before You Decide
Confirm the exact Wilkins 420 or 420XL model, the 1/2″ or 3/4″ size, and the included parts before choosing an offer. If your repair needs a complete new valve rather than internal service parts, this kit is not the right match.
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