The Wilkins 12-975XL2 is a reduced pressure principle backflow prevention assembly designed to protect potable water supplies from contamination, providing reliable protection where a potential health hazard exists.

Key Specifications:

• Size: 1/2 Inches
• Maximum Working Water Pressure: 175 PSI
• Maximum Working Water Temperature: 180°F
• Notable Certifications: ASSE 1013, IAPMO Listed, CSA B64.4
• End Connections: Threaded ANSI B1.20.1

Other Related Variants:

• 14-975XL2: 1/4 Inch model size
• 38-975XL2: 3/8 Inch model size

Materials:

• Low Lead Cast Bronze ASTM B584 (Main Valve Body and Access Covers)
• Stainless Steel, 300 Series (Fasteners, Springs, and Ball Valve Handles)
• Silicone FDA Approved (Elastomers)
• Buna Nitrile FDA Approved (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 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 or where relief valve discharge could cause damage. If installed indoors, the installation shall be supplied with an air gap and "Y" type strainer.

Standards Compliance:

ASSE Listed 1013; IAPMO Listed; CSA Certified B64.4; Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California; Meets the requirements of NSF/ANSI 61 (0.25% Max Weighted Average Lead Content)

Features & Benefits:

• Lead-Free Protection: Meets NSF/ANSI 61 with 0.25% maximum weighted average lead content, ideal for potable water applications.
• Dual Hazard Protection: Protects against both backsiphonage and backpressure of contaminated water into potable water supply.
• Easy Maintenance Access: Checks oriented at 45° angle upward and accessible for maintenance without removing the relief valve or entire device from the line.
• Durable Construction: Low lead cast bronze body with stainless steel fasteners and FDA-approved elastomers for long-lasting performance.

FAQ

Q: What is the required installation height for the Zurn 12-975XL2?

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 required for indoor installations?

A: Yes, if installed indoors, the installation must be supplied with an air gap and "Y" type strainer to ensure proper functionality and compliance.

Q: What are the maximum working pressure and temperature ratings for the Zurn 12-975XL2?

A: The maximum working water pressure is 175 PSI and the maximum working water temperature is 180°F, with a hydrostatic test pressure of 350 PSI.

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