The Wilkins 12-375 is a reduced pressure principle backflow preventer designed for irrigation water lines, protecting against backsiphonage and backpressure in non-potable systems.

Key Specifications:

• Available Sizes: 1/2", 3/4", 1", 1 1/4", 1 1/2", 2"
• Maximum Working Water Pressure: 175 PSI
• Maximum Working Water Temperature: 180°F
• Notable Certifications: ASSE 1013, cUPC, CSA B64.4
• End Connections: Threaded FNPT ANSI B1.20.1

Other Related Variants:

• 112-375: 1 1/2 Inches size version
• 114-375: 1 1/4 Inches size version
• 1-375: 1 Inches size version
• 2-375: 2 Inches size version
• 34-375: 3/4 Inches size version

Materials:

• Reinforced Nylon housing
• Stainless Steel fasteners, 300 Series
• Silicone elastomers
• Buna Nitrile elastomers
• Delrin internals
• Nylon internals
• Stainless steel springs, 300 series
• Cast Bronze ball valves, ASTM B 584
• Stainless Steel struts, 300 Series

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

Features & Benefits:

• Complete Protection: Protects against both backsiphonage and backpressure of contaminated water into potable water supply where potential health hazards exist.
• Durable Construction: Reinforced nylon housing with stainless steel internal components ensures long-lasting performance in demanding irrigation applications.
• Multiple Configuration Options: Available with full port ball valves, street elbows, integral test fittings, strainers, and air gap configurations to meet specific installation requirements.
• Serviceable Design: Field-serviceable internal components with available repair kits reduce maintenance costs and extend product lifespan.

FAQ

Q: What is the minimum and maximum installation height required for the Zurn 12-375?

A: The Wilkins 12-375 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: Can the Zurn 12-375 be used for potable water applications?

A: No, the Model 375 is designed for non-potable irrigation applications only to prevent contamination of the potable water supply.

Q: What accessories are available for the Wilkins 12-375?

A: Available accessories include repair kits, thermal expansion tanks, soft seated check valves, shock arresters, quick test fitting sets, and blow out/flush fittings for various sizes.

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