The Wilkins 34-975XL2TCUSAG is a reduced pressure principle assembly designed to protect potable water lines against backsiphonage and backpressure where a health hazard exists.

Key Specifications:

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

Other Related Variants:

• 112-975XL2TCUSAG: 1 1/2 Inches model size
• 1-975XL2TCUSAG: 1 Inches model size
• 2-975XL2TCUSAG: 2 Inches model size

Materials:

• Low Lead Cast Bronze ASTM B584 (Body and Access Covers)
• Stainless Steel, 300 Series (Fasteners and Springs)
• Silicone (Elastomers)
• Buna Nitrile (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 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 Listed 1013; cUPC Listed; CSA Certified B64.4; AWWA Compliant C511; Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California; Meets NSF/ANSI/CAN 61 and 372; UL Classified; C-UL Classified

Features & Benefits:

• Health Hazard Protection: Protects against both backsiphonage and backpressure of contaminated water into potable water supply systems.
• Lead-Free Compliance: Certified to NSF/ANSI/CAN 61 and 372 with less than 0.25% weighted average lead content for safe drinking water applications.
• Accessible Maintenance: First and second checks are accessible for maintenance without removing the relief valve or entire device from the line.
• Complete Package: Includes test cocks up (TCU), bronze Y-type strainer (S), and air gap accessory (AG) for comprehensive installation requirements.

FAQ

Q: What is the difference between the Zurn 34-975XL2TCUSAG and standard backflow preventers?

A: The Zurn 34-975XL2TCUSAG is a lead-free reduced pressure principle assembly that meets NSF/ANSI/CAN 372 standards with less than 0.25% weighted average lead content, making it compliant with current lead-free regulations for potable water systems.

Q: What does the "TCUSAG" suffix mean in the Wilkins 34-975XL2TCUSAG model number?

A: TCU stands for Test Cocks Up configuration, S indicates the inclusion of a bronze Y-type strainer, and AG means an air gap accessory is included with the assembly.

Q: Is the air gap fitting required for all installations?

A: The included air gap fitting (AG) is required for indoor installations to ensure proper drainage and prevent submersion of the unit. Outdoor installations may use alternative drainage configurations as specified by local codes.

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