The Wilkins 2-975XL3 is a 2 inch reduced pressure principle backflow preventer designed for high-capacity potable water service protection against backsiphonage and backpressure contamination.

Key Specifications:

• Size: 2 Inches
• Maximum Working Water Pressure: 175 PSI
• Maximum Working Water Temperature: 180°F (82°C)
• Notable Certifications: ASSE 1013, cUPC, CSA B64.4
• End Connections: FNPT threaded ANSI B1.20.1

Other Related Variants:

• 12-975XL3: 1/2 Inch size version
• 34-975XL3: 3/4 Inch size version
• 1-975XL3: 1 Inch size version
• 114-975XL3: 1 1/4 Inches size version
• 112-975XL3: 1 1/2 Inches size version

Materials:

• Low Lead Cast Bronze ASTM B 584 (main valve body and access covers)
• Stainless Steel, 300 Series (fasteners and springs)
• Silicone, FDA Approved (elastomers)
• Buna Nitrile, FDA Approved (elastomers)
• Noryl™ (polymers)
• Stainless Steel (ball valve handles)

Typical Installation:

Local codes shall govern installation requirements. To be installed in accordance with the manufacturers' instructions and the latest edition of the Uniform Plumbing Code. Unless otherwise specified, the assembly shall be mounted at a minimum of 12 inches (305mm) and a maximum of 30 inches (762mm) above adequate drains with sufficient side clearance for testing and maintenance. The installation shall be made so that no part of the unit can be submerged.

Standards Compliance:

ASSE Listed 1013; cUPC Listed; CSA Certified B64.4; UL Classified (less shut-off valves); C-UL Classified; AWWA Compliant C511; Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California; NSF/ANSI/CAN 61 and 372 compliant

Features & Benefits:

• Lead-Free Compliance: Meets NSF/ANSI/CAN 372 standards with less than 0.25% weighted average lead content, ideal for potable water applications.
• Dual Protection: Protects against both backsiphonage and backpressure of contaminated water where potential health hazards exist.
• Easy Maintenance Access: First and second checks accessible for maintenance without removing relief valve or entire device from the line, with shared single access cover.
• Durable Construction: Low lead cast bronze body with Noryl internal components, stainless steel springs, and FDA-approved silicone elastomers ensure long-lasting performance.

FAQ

Q: What is the minimum installation height required for the Zurn 2-975XL3?

A: The assembly must be mounted at a minimum of 12 inches (305mm) and a maximum of 30 inches (762mm) above adequate drains with sufficient side clearance for testing and maintenance.

Q: What is the minimum working water pressure for this backflow preventer?

A: The Zurn 2-975XL3 requires a minimum working water pressure of 25 PSI to function properly.

Q: Can the checks be serviced without removing the entire unit?

A: Yes, both the first and second checks are accessible for maintenance without removing the relief valve or the entire device from the line, sharing a single access cover for convenient servicing.

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