The Wilkins 2-975XL is a 2-inch reduced pressure principle backflow assembly designed to protect potable water supplies from backsiphonage and backpressure contamination in high-hazard, non-potable applications.

Key Specifications:

• Size: 2 Inches
• Maximum Working Pressure: 175 PSI
• Maximum Working Temperature: 180°F
• Notable Certifications: ASSE 1013, cUPC, UL
• End Connections: Threaded ANSI B1.20.1

Other Related Variants:

• 34-975XL: 3/4 Inches
• 1-975XL: 1 Inch
• 114-975XL: 1 1/4 Inches
• 112-975XL: 1 1/2 Inches

Materials:

• Cast Bronze body per ASTM B584
• Cast Bronze access covers per ASTM B584
• Stainless Steel 300 Series fasteners
• Stainless Steel 300 Series springs
• Silicone elastomers
• Buna Nitrile elastomers
• Noryl™ internal polymers
  

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 and a maximum of 30 inches 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 1013; cUPC; UL Classified; C-UL Classified; CSA B64.4; AWWA C511; USC Foundation for Cross Connection Control; NYC MEA 425-89-M VOL 3

Features & Benefits:

• Superior Contamination Protection: Protects against both backsiphonage and backpressure in high-hazard applications, ensuring potable water safety.
• Durable Bronze Construction: Cast bronze body and access covers per ASTM B 584 with stainless steel components provide long-lasting reliability and corrosion resistance.
• Easy Maintenance Access: First and second checks are accessible for maintenance without removing the relief valve or the entire device from the line.
• Comprehensive Compliance: Multiple certifications including ASSE 1013, cUPC, UL, CSA, and AWWA ensure code compliance across various jurisdictions.

FAQ

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

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

Q: Does the Wilkins 2-975XL require an air gap for indoor installations?

A: Yes, if installed indoors, the installation must be supplied with an air gap adapter to ensure proper drainage and prevent submersion.

Q: Can the check valves be serviced without removing the entire Zurn 2-975XL from the line?

A: Yes, the first and second checks are accessible for maintenance without removing the relief valve or the entire device from the line, simplifying service and reducing downtime.

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