The Zurn Wilkins RK34‑975XLC is a complete repair kit designed for 3/4" Model 975XL Reduced Pressure Principle Backflow Preventers. It provides all essential internal components to restore performance, ensuring reliable backflow protection and extended service life.

Key Specifications:

• Compatibility: For use with Zurn Wilkins 3/4" 975XL Reduced Pressure Principle Backflow Preventer
• Components Included: Cartridge assembly, diaphragm, diaphragm disc, diaphragm bolt, spring, spring disc, friction ring, seal rings, o‑rings, locknut, adjustment bolt
• Maintenance: Designed for periodic inspection, cleaning, and repair of valve internals
• OEM Quality: Genuine Zurn Wilkins replacement parts manufactured to original specifications
• Number of Kits: Single complete kit

Features & Benefits:

• Complete Solution: Provides all major internal parts needed to restore valve function.
• Ease of Service: Unitized cartridge design reduces time required for cleaning and maintenance.
• Extended Valve Life: Replacing worn components helps maintain consistent outlet pressure and prolongs valve service life.
• OEM Quality: Manufactured by Zurn Wilkins to meet original specifications for fit and performance.

What's Included:

• Cartridge assembly
• Diaphragm
• Diaphragm disc
• Diaphragm bolt
• Spring
• Spring disc
• Friction ring
• Seal rings
• O‑rings
• Locknut
• Adjustment bolt

FAQ

Q: Which valve models are compatible with the RK34‑975XLC repair kit?
A: The RK34‑975XLC is specifically designed for 3/4" Zurn Wilkins Model 975XL Reduced Pressure Principle Backflow Preventers, including the 975XL Reduced Pressure Principle Assembly and the 975XL2 Reduced Pressure Backflow Preventer.

Q: What components are included in the RK34‑975XLC kit?
A: The kit includes cartridge assembly, diaphragm, diaphragm disc, diaphragm bolt, spring, spring disc, friction ring, seal rings, o‑rings, locknut, and adjustment bolt.

Q: How often should the repair kit be used?
A: Zurn recommends annual inspection and maintenance of backflow preventers. Use the repair kit whenever internal components show wear, leakage, or pressure creep.

Q: Can this kit be used for other valve sizes?
A: No. The RK34‑975XLC is specifically for 3/4" 975XL assemblies. Other sizes require different kits (e.g., RK1‑975XLC for 1").

Q: What tools are required for installation?
A: A differential pressure gauge test kit, wrenches, sockets, and silicone‑based o‑ring grease are typically needed for proper service.

NOTICE: Always depressurize the valve before servicing. Follow Zurn Wilkins installation and repair instructions to ensure safe operation.

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