Zurn Wilkins RK1-375V Complete Pressure Vessel for 1-375, 1-375XL

Zurn Wilkins RK1-375V Complete Pressure Vessel for 1" 375 & 375XL RPZ Backflow Preventers.

Product Overview

The Zurn Wilkins RK1-375V Complete Pressure Vessel is a genuine OEM replacement designed for 1" 375 and 375XL Reduced Pressure Zone (RPZ) Backflow Preventers. This complete assembly provides everything needed to restore your backflow preventer to optimal working condition, ensuring continued protection of potable water systems from backpressure and backsiphonage.

Built from durable, lead-free compliant materials, the RK1-375V is engineered for easy installation, long service life, and reliable backflow prevention performance.

Features & Benefits

• OEM Replacement: Genuine Zurn Wilkins part ensures compatibility and reliability

• Complete Pressure Vessel: Provides a full assembly for efficient repair or replacement

• Restores System Integrity: Keeps RPZ backflow preventers operating to factory specifications

• Corrosion-Resistant Build: Durable materials withstand demanding conditions

• Lead-Free Certified: Meets NSF/ANSI 372 requirements for potable water applications

• Simple Installation: Designed for in-line serviceability with standard plumbing tools

Specifications

• Model: RK1-375V

• Fits Models:

  • Zurn Wilkins 375 (1-375, 1")

  • Zurn Wilkins 375XL (1-375XL, 1")

• Assembly Type: Complete Pressure Vessel

• Application: Reduced Pressure Zone (RPZ) Backflow Preventers

• Compliance: NSF/ANSI 372 Lead-Free Certified

Installation Tips

• Shut off the water supply and relieve line pressure before starting work

• Remove the old pressure vessel carefully to avoid damage to the body housing

• Inspect the valve body for debris or corrosion before installing the replacement

• Lubricate O-rings and seals to ensure proper fit and prevent leaks

• Reassemble and conduct a backflow prevention performance test to verify operation

FAQs

Q: Which models does this replacement fit?
A: It fits Zurn Wilkins 1" 375 and 375XL backflow preventers (models 1-375 and 1-375XL).

Q: Does the kit include internal check components?
A: Yes, it comes as a complete pressure vessel assembly for direct replacement.

Q: Is it certified for potable water systems?
A: Yes, it is NSF/ANSI 372 lead-free compliant for safe use in drinking water lines.

Q: Can I service this in-line without removing the valve?
A: Yes, the design allows for easy in-line servicing with basic plumbing tools.