Skip to content
Product photo of Zurn Wilkins RK34-375V complete repair kit showing pressure vessel, check modules, O‑rings, relief valve components on white background.

Wilkins RK34-375V Complete Repair Kit 3/4 in

Brand: Zurn Industries, LLC
Save 28%
$275.87
$198.99
SKU RK34-375V
In Stock (5)

Notify me when back in stock

Restore performance and reliability with the genuine Zurn Wilkins RK34-375V Complete Repair Kit for 3/4 in backflow assemblies. This all-in-one kit replaces worn rubber and internal components to return your 375 series device to manufacturer specifications.

  • Complete pressure vessel and working internal modules for 1/2"–3/4" 375, 375XL, and 375ST models.
  • Includes No. 1 and No. 2 check modules, relief valve stem, seat and spring, and a full set of O‑rings.
  • Contains manufacturer-grade lubricant and replacement seals to ensure reliable seating and leak-free operation.
  • Genuine Zurn/Wilkins parts engineered for straightforward field service; no special tools required for common repairs.
  • Refer to model-specific installation and maintenance documentation supplied with the kit for correct procedures and part references.

Choose the RK34-375V kit to avoid full assembly replacement and extend the service life of your backflow preventer. Follow the included parts list and installation instructions when servicing; have a certified plumber or trained technician perform pressure testing after repair to verify proper operation.

Reviews

Frequently Asked Questions

What models does the RK34-375V repair kit fit?
Fits 1/2"–3/4" Wilkins 375, 375XL, and 375ST reduced pressure/backflow assemblies; matches manufacturer part RK34-375V.
What components are included in the complete repair kit?
Includes No.1 and No.2 check modules, the pressure vessel, relief valve components, a full set of O‑rings, and lubricant for reassembly.
Can I perform the repair myself or need a certified technician?
A qualified plumber can perform the replacement; follow the supplied installation and maintenance instructions and perform required pressure testing after service.

Add a FREE Pair of Gloves to Your Order

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