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The Wilkins 1-375ST is a stainless steel reduced pressure principle backflow preventer designed for potable water protection in corrosive and high-purity applications.

Key Specifications:

• Size: 1 Inches
• Maximum Working Water Pressure: 175 PSI
• Maximum Working Water Temperature: 180°F
• Notable Certifications: ASSE 1013, CSA B64.4, NSF/ANSI/CAN 61
• End Connections: Threaded FNPT

Other Related Variants:

• 1/2-375ST: 1/2 Inches model size
• 3/4-375ST: 3/4 Inches model size

Materials:

• Housing: Reinforced Nylon, FDA approved
• Fasteners: Stainless Steel, 300 Series
• Elastomers: Silicone (FDA Approved)
• Elastomers: Buna Nitrile (FDA Approved)
• Internals: Delrin
• Internals: Nylon
• Springs: Stainless Steel, 300 series
• Ball Valves: Cast Stainless Steel ASTM A351, CF-8M
• Struts: Stainless Steel, 300 Series

Typical Installation:

Designed for installation on potable water lines to protect against both backsiphonage and backpressure of contaminated water into the potable water supply. The Zurn 1-375ST provides protection where a potential health hazard exists. The valve's stainless steel construction is ideal in systems that utilize liquids corrosive to copper alloys. Potential applications include medical diagnostic equipment, food processing, distilleries, and breweries. To be installed in accordance with the manufacturers' instructions and the latest edition of the Uniform Plumbing Code. 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.

Standards Compliance:

ASSE Listed 1013; CSA B64.4; Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California; NSF/ANSI/CAN 61

Features & Benefits:

• Corrosion Resistance: Stainless steel construction ideal for corrosive liquids and high-purity applications where copper alloys are unsuitable.
• Lead-Free Compliance: Meets 0.25% maximum weighted average lead content requirement, suitable for potable water applications requiring lead-free valves.
• High Performance Materials: FDA-approved reinforced nylon housing with silicone and Buna-N elastomers ensures durability and safe contact with potable water.
• Full Port Ball Valves: Supplied with full port QT stainless steel ball valves for optimal flow and easy maintenance.

FAQ

Q: What are the installation height requirements for the Wilkins 1-375ST?

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: What makes the Zurn 1-375ST suitable for corrosive environments?

A: The stainless steel construction of the ball valves, fasteners, springs, and struts makes it ideal for systems using liquids corrosive to copper alloys, such as in food processing and medical diagnostic equipment.

Q: What is the maximum working pressure and temperature for this backflow preventer?

A: The Model 1-375ST is rated for a maximum working water pressure of 175 PSI and a maximum working water temperature of 180°F.

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