Zurn Wilkins RK34-975XL Repair Kit | 3/4" & 1" 975XL / 975XL2 RPZ Models

Zurn Wilkins RK34-975XL Repair Kit | 3/4" & 1" 975XL / 975XL2 RPZ ModelsZurn Wilkins RK34 975XL Repair Kit 3 4" & 1" 975XL 975XL2 RPZ Models. Product Overview: Restore peak performance to your Zurn 975XL or 975XL2 Reduced Pressure Principle Assembly (RPZ) with the Zurn RK34 975XL Complete Repair Kit. Designed for 3 4" and 1" models, this all in one solution includes everything needed to rebuild and maintain your backflow preventer ensuring ongoing compliance, reliability, and system integrity. Whether for routine

Zurn Wilkins RK34-975XL Repair Kit | 3/4" & 1" 975XL / 975XL2 RPZ Models.

Product Overview:

Restore peak performance to your Zurn 975XL or 975XL2 Reduced Pressure Principle Assembly (RPZ) with the Zurn RK34-975XL Complete Repair Kit. Designed for 3/4" and 1" models, this all-in-one solution includes everything needed to rebuild and maintain your backflow preventer — ensuring ongoing compliance, reliability, and system integrity. Whether for routine maintenance or emergency repairs, this genuine Zurn repair kit is engineered for a precise fit and long-lasting performance.

Features & Benefits:

• Complete Internal Kit: Includes essential components to fully restore check assemblies and the relief valve

• Compatible Fit: Designed for 975XL & 975XL2 models in 3/4" and 1" sizes

• Genuine Zurn Parts: Manufactured to original factory specifications for reliable performance

• Cost-Effective Maintenance: Avoid full unit replacement with this comprehensive rebuild kit

• Simple Installation: Components are pre-sized and compatible for straightforward servicing

• Ideal for Proactive Upkeep: Keep your RPZ assembly operating at optimal protection levels

What's Included:

• (2) 136N O-Ring Covers – Seals check covers securely

• (2) 952-300S Poppet Assemblies – Replaces internal check valve elements

• (1) 972-33 No. 1 Check Spring – Restores first check valve performance

• (1) 952-33 No. 2 Check Spring – Restores second check valve performance

• (1) 972-50S Relief Valve Stem Assembly – Ensures proper relief operation

• (1) 972A-33 Relief Valve Spring – Maintains correct relief valve tension

• (1) RK34-975XLSK Seat Repair Kit – Repairs wear on internal seats for tight seal integrity

Compatible Models:

• 975XL: 3/4" (34-975XL), 1" (1-975XL)

• 975XL2: 3/4" (34-975XL2), 1" (1-975XL2)

Installation Tips:

• Shut off water supply and relieve pressure before servicing

• Follow Zurn manufacturer instructions for disassembly

• Inspect internal seats and sealing surfaces before installing new components

• Reassemble in reverse order and test for leaks post-installation

• Consider periodic maintenance scheduling based on water quality conditions

FAQs:

Q: Can this kit be used for both 3/4" and 1" models?
A: Yes, it is designed to fit both 3/4" and 1" 975XL and 975XL2 assemblies.

Q: Is this a genuine Zurn OEM kit?
A: Absolutely, all components are manufactured to Zurn’s factory specifications.

Q: Do I need special tools to install this kit?
A: No special tools are needed, but standard plumbing tools and test equipment are recommended.

Q: Will this kit fix a leaking backflow preventer?
A: In many cases, yes — this kit replaces worn internal components that commonly cause leaks.