Zurn Wilkins 975XL Reduced Pressure Principle Assembly Backflow Preventer Series

Zurn Wilkins 975XL Reduced Pressure Backflow Preventer (RPZ / RPBA).

Wilkins Model 975xl Backflow Preventer.

Overview:

The Zurn Wilkins 975XL Reduced Pressure Principle Backflow Preventer is a premium backflow valve designed to deliver high hazard protection for non-potable water applications. Its durable, wye-pattern bronze body allows separate access to each check valve and the relief valve, ensuring quick and efficient servicing. Trusted by professionals worldwide, the 975XL is the ultimate solution for safeguarding potable water supplies from contamination due to backsiphonage or backpressure.

Wilkins RPZ 975XL Features & Benefits:

• Size Options: 1/4", 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2", 2"
• Durable Construction: All-bronze body with corrosion-resistant stainless steel internals for long-lasting performance.
• Service-Friendly Design: Top-access checks make repairs easy, even in tight spaces.
• Replaceable Seats: Both check and relief valve seats can be replaced for extended lifespan.
• Cost-Effective Maintenance: Wye-pattern design reduces installation time, while easy debris removal lowers service costs.
• Fully Serviceable In-Line: No need for removal, making maintenance seamless.

Application:

The Zurn Wilkins 975XL is perfect for installation on water lines requiring protection from contamination risks. It is designed to protect against:

• Backsiphonage: Prevents contaminated water from flowing backward into the clean water supply.
• Backpressure: Safeguards potable water from contamination by non-potable sources.

Recommended for use in settings where health hazards from cross-connections may arise.

Standards Compliance:

This RPZ backflow preventer meets or exceeds rigorous industry standards, ensuring reliability and performance:

• ASSE® Listed 1013
• IAPMO® Listed
• CSA® B64.4
• AWWA Compliant
• Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California

Technical Specifications:

• Maximum Working Pressure: 175 psi
• Maximum Working Temperature: 180°F
• Hydrostatic Test Pressure: 350 psi
• Threaded Connections (FNPT): ANSI B1.20.1
• Relief Valve Discharge Port:
  • 1/4” - 1/2”: 0.38 sq. in.

Materials:

Built for durability and reliability with premium-grade materials:

• Main Valve Body: Cast bronze ASTM B584
• Access Covers: Cast bronze ASTM B584
• Internal Components: 300 Series stainless steel
• Elastomers: Silicone and Buna nitrile (FDA-approved)
• Polymers: Noryl™, NSF Listed
• Springs: Stainless steel, 300 Series

Installation Guidelines:

• Must comply with local codes and the manufacturer’s instructions.
• Install at a height between 12" (305 mm) and 30" (762 mm) above adequate drains.
• Ensure sufficient clearance for testing and maintenance.
• Avoid submersion or installation in areas where relief valve discharge could cause damage.

Why Choose the Zurn Wilkins 975XL?

✔ Proven Reliability: A trusted choice for professionals, backed by rigorous standards compliance.
✔ Ease of Use: Simplified maintenance and installation save time and costs.
✔ Versatility: Multiple sizes and configurations to suit any application.
✔ Durability: Built with corrosion-resistant, high-quality materials to last in demanding environments.

Technical Downloads:

• Zurn Wilkins 975XL: Specification Submittal (1/4" to 1/2")
• Zurn Wilkins 975XL: Specification Submittal (3/4" to 2")
• Zurn Wilkins 975XL: Installation Instructions
• Zurn Wilkins 975XL: Installation Instructions (Spanish)
• Zurn Wilkins 975XL: Installation Instructions (French)
• Zurn Wilkins 975XL: Repair Parts (1/4" to 1/2")
• Zurn Wilkins 975XL: Repair Parts (3/4" to 2")