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The Wilkins 1-975XLTCU is a 1 Inch reduced pressure principle assembly designed to provide high hazard protection against backsiphonage and backpressure of contaminated water into potable water supplies.

Key Specifications:

• Size: 1 Inches
• Maximum Working Water Pressure: 175 PSI
• Maximum Working Water Temperature: 180°F
• Notable Certifications: ASSE 1013, cUPC, UL
• End Connections: FNPT ANSI B1.20.1

Other Related Variants:

• None: No other variants specified

Materials:

• Main valve body: Cast Bronze ASTM B-584
• Access covers: Cast Bronze ASTM B-584
• Fasteners: Stainless Steel 300 Series
• Elastomers: Silicone and Buna Nitrile
• Polymers: Noryl™
• Springs: Stainless Steel 300 Series

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 Listed 1013; cUPC Listed; UL Classified (less shut-off valves or with OS&Y valves); C-UL Classified; CSA Certified B64.4; AWWA Compliant C511; Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California; NYC MEA 425-89-M VOL 3

Features & Benefits:

• High Hazard Protection: Protects against both backsiphonage and backpressure where potential health hazards exist in non-potable applications.
• Test Cocks Up Configuration: The TCU option allows test cocks to face upward, simplifying testing and enabling installation close to walls or equipment.
• Accessible Maintenance Design: First and second checks are accessible for maintenance without removing the relief valve or the entire device from the line.
• Durable Bronze Construction: Cast bronze ASTM B-584 body with stainless steel fasteners and springs ensures long-lasting performance and corrosion resistance.

FAQ

Q: What is the TCU option on the Zurn 1-975XLTCU?

A: TCU stands for "test cocks up," meaning the test cocks are oriented upward to allow installation close to walls and simplify testing procedures.

Q: What is the minimum installation height required for the Wilkins 1-975XLTCU?

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: Can the Zurn 1-975XLTCU be used for potable water applications?

A: The Model 975XL is designed for non-potable applications only, providing protection where a potential health hazard exists.

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