Skip to content

Wilkins RK1-420R 1" Rubber Repair Kit for Model 420/420XL

Brand: Zurn Industries, LLC
Save 25%
$69.59
$52.19
SKU RK1-420R

Notify me when back in stock

Genuine Wilkins RK1-420R rubber repair kit engineered to restore sealing performance on 1" Wilkins Model 420 and 420XL pressure vacuum breakers. Designed for routine maintenance, this OEM kit replaces worn elastomers that can cause leaks, noise, or reduced air‑inlet function.

  • Kit includes: bonnet O‑ring, seat O‑ring, check seal ring, air inlet disc.
  • OEM rubber components sized for 1" 420 / 420XL assemblies.
  • Restores reliable backsiphonage protection for potable water systems.
  • Field‑serviceable — no special tools required for most repairs.
  • Compatible with both original 420 and the lead‑free 420XL models.
  • Refer to the downloadable repair parts and installation instructions on this page.

Replace worn seals during routine inspection or when leakage is observed. If you're unsure about compatibility, verify the model stamp on the valve body and consult the included manufacturer documents or contact technical support for guidance.

Reviews

Frequently Asked Questions

What parts are included in the RK1-420R rubber repair kit?
Includes bonnet O‑ring, seat O‑ring, check seal ring and air inlet disc.
Is this kit compatible with Wilkins Model 420XL?
Yes. The RK1-420R fits 1" Model 420 and the 420XL assemblies; verify size stamp before ordering.
How difficult is installation and what tools are required?
Field‑serviceable for most technicians; basic hand tools are usually sufficient. Follow manufacturer instructions.

Add a FREE Pair of Gloves to Your Order

Spend $35+ Add a FREE Pair of Gloves to Your Order Select Your Size