The Wilkins 112-975XL2 is a reduced pressure principle backflow preventer designed to protect potable water systems against backsiphonage and backpressure contamination in commercial and industrial applications.

Key Specifications:

• Size: 1 1/2 Inches
• Maximum Working Water Pressure: 175 PSI
• Maximum Working Water Temperature: 180°F
• Notable Certifications: ASSE 1013, NSF/ANSI/CAN 61 & 372
• End Connections: Threaded ANSI B1.20.1

Other Related Variants:

• 34-975XL2: 3/4 Inches version
• 1-975XL2: 1 Inches version
• 114-975XL2: 1 1/4 Inches version
• 2-975XL2: 2 Inches version

Materials:

• Low Lead Cast Bronze ASTM B 584 (main valve body and access covers)
• Stainless Steel, 300 Series (fasteners, springs, ball valve handles)
• Silicone (elastomers)
• Buna Nitrile (elastomers)
• Noryl™ (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 (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.

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 (less shut-off valves or with OS&Y valves); C-UL Classified

Features & Benefits:

• Dual Protection: The Zurn 112-975XL2 provides comprehensive protection against both backsiphonage and backpressure of contaminated water into potable water supply systems.
• Lead-Free Compliance: Manufactured with low lead bronze construction meeting NSF/ANSI/CAN 61 and 372 standards with less than 0.25% weighted average lead content.
• Easy Maintenance Access: First and second checks are accessible for maintenance without removing the relief valve or the entire device from the line.
• High-Flow Relief Valve: Designed with generous discharge port sizes (1.19 sq. in. for 1 1/4 inches - 2 inches) to handle excessive water discharge and prevent flooding damage.

FAQ

Q: What is the maximum working pressure for the Zurn 112-975XL2?

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

Q: Can this backflow preventer be installed outdoors?

A: Yes, the Wilkins 112-975XL2 can be installed outdoors with optional protective enclosure or indoors with proper air gap adapter and drainage provisions.

Q: What type of maintenance access does this unit provide?

A: The first and second checks are accessible for maintenance without removing the relief valve or removing the entire assembly from the line, allowing for easier servicing.

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