The Wilkins 34-975XL2TCU is a Reduced Pressure Principle backflow preventer designed for potable water lines, protecting against backsiphonage and backpressure where health hazards exist.

Key Specifications:

• Size: 3/4 Inches
• Maximum Working Water Pressure: 175 PSI
• Maximum Working Water Temperature: 180°F
• Notable Certifications: ASSE 1013, cUPC, CSA B64.4
• End Connections: Threaded ANSI B1.20.1

Other Related Variants:

• 1-975XL2TCU: 1 Inch model size
• 2-975XL2TCU: 2 Inches model size

Materials:

• Main Valve Body: Low Lead Cast Bronze ASTM B 584
• Access Covers: Low Lead Cast Bronze ASTM B 584
• Fasteners: Stainless Steel, 300 Series
• Elastomers: Silicone
• Elastomers: Buna Nitrile
• Polymers: Noryl™
• Springs: Stainless Steel, 300 Series
• Ball Valve Handles: Stainless Steel

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. For indoor installations, the installation shall be supplied with an air gap adapter.

Standards Compliance:

ASSE 1013; cUPC; CSA B64.4; AWWA C511; UL/C-UL Classified; NSF/ANSI/CAN 61 & 372; Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California

Features & Benefits:

• Health Hazard Protection: Provides protection where a potential health hazard exists, safeguarding potable water supply from contaminated water backflow.
• Lead-Free Construction: Low lead cast bronze construction meets NSF/ANSI/CAN 61 and 372 requirements with less than 0.25% weighted average lead content.
• Full Port Ball Valves: Equipped with full port QT ball valves for optimal flow and test cocks up configuration for convenient testing and maintenance.
• Durable Materials: Features 300 Series stainless steel fasteners, springs, and handles with silicone and buna nitrile elastomers for long-lasting performance.

FAQ

Q: What is the proper installation height for the Zurn 34-975XL2TCU backflow preventer?

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: Is an air gap fitting required for the Zurn 34-975XL2TCU?

A: Yes, for indoor installations, an air gap adapter must be supplied. The installation must be made so that no part of the unit can be submerged.

Q: What type of water supply lines is the Wilkins 34-975XL2TCU suitable for?

A: The Wilkins 34-975XL2TCU is designed for installation on potable water lines to protect against both backsiphonage and backpressure where a potential health hazard exists.

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