The Wilkins 1-975XL2TCU is a reduced pressure principle backflow preventer designed to protect potable water supplies from contamination by backsiphonage and backpressure where health hazards exist.

Key Specifications:

• Size: 1 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:

• 2-975XL2TCU: 2 Inches version
• 34-975XL2TCU: 3/4 Inches version

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 and Buna Nitrile
• Polymers: Noryl™
• Springs: Stainless Steel, 300 Series
• Ball valve handles: Stainless Steel

Typical Installation:

Local codes shall govern installation requirements. 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. 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; 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.
• Lead-Free Construction: Made with low lead cast bronze meeting NSF/ANSI/CAN 61 and 372 standards for safe potable water applications.
• Easy Maintenance Access: First and second checks accessible for maintenance without removing relief valve or entire device from the line.
• Full Port Ball Valves: Equipped with full port QT ball valves and test cocks up configuration for simplified testing and service.

FAQ

Q: What is the required installation height for the Zurn 1-975XL2TCU?

A: The unit must be installed 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 Wilkins 1-975XL2TCU be installed outdoors?

A: Yes, the unit can be installed outdoors. However, for indoor installations, an air gap fitting is required to prevent submersion of any part of the unit.

Q: What is the maximum working pressure for the Zurn 1-975XL2TCU?

A: The maximum working water pressure is 175 PSI, with a hydrostatic test pressure rating of 350 PSI.

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