Zurn Wilkins RK34-375V Complete Pressure Vessel for 12-375, 34-375 & 12-375XL, 34-375XL

Zurn Wilkins RK34-375V Complete Pressure Vessel for 375 & 375XL Backflow Preventers.

Product Overview

The Zurn Wilkins RK34-375V Complete Pressure Vessel is a genuine replacement assembly designed for 1/2" and 3/4" 375 and 375XL Reduced Pressure Zone (RPZ) Backflow Preventers. This factory-engineered kit includes the entire pressure vessel assembly, ensuring your backflow preventer maintains peak performance and compliance with plumbing codes.

Ideal for restoring worn or damaged RPZ backflow preventers, the RK34-375V makes maintenance simple and cost-effective while extending the service life of your unit.

Features & Benefits

• OEM Replacement: Genuine Zurn Wilkins part ensures reliable fit and function

• Complete Assembly: Includes the full pressure vessel for quick, efficient replacement

• Restores Performance: Keeps your 375 and 375XL RPZ backflow preventers operating like new

• Protects Potable Water: Maintains effective backflow prevention against backsiphonage and backpressure

• Durable Construction: Built with high-quality materials to resist corrosion and wear

• Lead-Free Compliance: Meets NSF/ANSI 372 standards for potable water applications

Specifications

• Model: RK34-375V

• Fits Models:

  • Zurn Wilkins 375 (1/2" 12-375, 3/4" 34-375)

  • Zurn Wilkins 375XL (1/2" 12-375XL, 3/4" 34-375XL)

• Assembly Type: Complete Pressure Vessel

• Application: Reduced Pressure Zone (RPZ) Backflow Preventers

• Compliance: NSF/ANSI 372 Lead-Free Certified

Installation Tips

• Shut off water supply and relieve pressure before servicing

• Remove the existing pressure vessel carefully to avoid damage to housing

• Inspect sealing surfaces and clean before installing the new vessel

• Lubricate O-rings to ensure proper sealing and leak prevention

• Perform a certified backflow prevention test after installation to confirm functionality

FAQs

Q: Which models does this pressure vessel fit?
A: It fits Zurn Wilkins 375 and 375XL models in 1/2" and 3/4" sizes (12-375, 34-375, 12-375XL, 34-375XL).

Q: Does this include internal components?
A: Yes, it is a complete pressure vessel assembly designed for direct replacement.

Q: Is this a lead-free compliant replacement?
A: Yes, it is fully certified to NSF/ANSI 372 standards for potable water systems.

Q: Do I need special tools to install this?
A: Standard plumbing tools are sufficient, but follow Zurn’s maintenance instructions for best results.