The Wilkins 34-975XL2SE is a reduced pressure principle backflow prevention assembly with 90° street elbows designed to protect potable water supplies from contamination where a potential health hazard exists.

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:

• 1-975XL2SE: 1 Inch 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 (FDA Approved)
• Elastomers: Buna Nitrile (FDA Approved)
• 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. If installed indoors, the installation shall be supplied with an air gap adapter.

Standards Compliance:

ASSE 1013; IAPMO Listed; CSA Certified; AWWA C511; Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California; NSF/ANSI/CAN 61; NSF/ANSI/CAN 372

Features & Benefits:

• Compact Installation Footprint: The Zurn 34-975XL2SE features 90° street elbows that allow for installation in confined spaces or landscaping applications.
• Lead-Free Compliance: Certified to NSF/ANSI/CAN 61 with 0.25% maximum weighted average lead content, meeting lead-free requirements for potable water applications.
• Dual Protection Design: Provides protection against both backsiphonage and backpressure of contaminated water into potable water supply systems.
• Easy Maintenance Access: First and second check valves are accessible for maintenance without removing the relief valve or the entire device from the line.

FAQ

Q: What is the required installation height for the Wilkins 34-975XL2SE?

A: The Zurn 34-975XL2SE 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: Is an air gap fitting required for all installations?

A: An air gap adapter is required only for indoor installations. The installation shall be made so that no part of the unit can be submerged.

Q: What is the hydrostatic test pressure rating?

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

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