The Wilkins 1-375FT is a 1" reduced pressure principle assembly designed for irrigation water line protection against backsiphonage and backpressure contamination.

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 FNPT ANSI B1.20.1

Other Related Variants:

• N/A: No related variants for this specific size and option combination

Materials:

• Housing: Reinforced Nylon
• Ball Valves: Cast Bronze ASTM B584
• Fasteners: Stainless Steel, 300 Series
• Struts: Stainless Steel, 300 Series
• Springs: Stainless Steel, 300 Series
• Elastomers: Silicone and Buna Nitrile
• Internals: Delrin, Nylon

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. If installed indoors, the installation shall be supplied with an air gap adapter.

Standards Compliance:

ASSE 1013; cUPC; CSA B64.4; AWWA C511; Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California

Features & Benefits:

• Backflow Protection: Provides dual protection against both backsiphonage and backpressure for irrigation water lines, ensuring contaminated water never enters potable supply.
• Durable Construction: Reinforced nylon housing with cast bronze ball valves and 300 series stainless steel components deliver long-lasting reliability in demanding environments.
• Full Port QT Ball Valves: Standard full port quick-test ball valves with integral male 45° flare SAE test fittings simplify maintenance and testing procedures.
• High Temperature & Pressure Rating: Rated for 175 PSI maximum working pressure and 180°F maximum temperature to handle demanding irrigation applications.

FAQ

Q: What is the required installation height for the Zurn 1-375FT backflow preventer?

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. The unit must not be submerged.

Q: Is the Wilkins 1-375FT suitable for potable water applications?

A: No, this model is designed for non-potable applications only. It is specifically designed for installation on irrigation water lines to protect the potable water supply.

Q: What additional component is required for indoor installations?

A: For indoor installations of the Zurn 1-375FT, an air gap adapter is required to ensure proper drainage and prevent submersion of the unit.

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