The Wilkins 112-375XLS is a 1 1/2" Reduced Pressure Principle Backflow Preventer Assembly with integrated lead-free bronze strainer, designed to protect potable water supplies from contamination.

Key Specifications:

• Size: 1 1/2 Inches
• Maximum Working Water Pressure: 175 psi
• Maximum Working Water Temperature: 180°F
• Notable Certifications: ASSE 1013, cUPC, CSA B64.4
• End Connections: FNPT Threads

Other Related Variants:

• 12-375XLS: 1/2 Inch model size
• 34-375XLS: 3/4 Inch model size
• 1-375XLS: 1 Inch model size
• 2-375XLS: 2 Inch model size

Materials:

• Housing: Reinforced Nylon (FDA approved)
• Ball Valves: Low Lead Cast Bronze (ASTM B 584)
• Strainer: Lead-Free Bronze
• Fasteners: Stainless Steel (300 Series)
• Springs: Stainless Steel (300 Series)
• Struts: Stainless Steel (300 Series)
• Elastomers: Silicone (FDA Approved)
• Elastomers: Buna Nitrile (FDA Approved)
• Internals: Delrin
• Internals: 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 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.

Standards Compliance:

ASSE 1013; cUPC; CSA B64.4; AWWA C511; USC Foundation Approved; NSF/ANSI/CAN 61 & 372

Features & Benefits:

• Lead-Free Compliance: Certified to NSF/ANSI/CAN 372 with less than 0.25% weighted average lead content for safe potable water applications.
• Dual Protection: The Zurn 112-375XLS protects against both backsiphonage and backpressure to ensure potable water supply integrity.
• Integrated Strainer: Model SXL lead-free bronze Y-type strainer provides effective debris filtration and system protection.
• Durable Construction: Reinforced nylon housing with stainless steel components ensures long-lasting performance and corrosion resistance.

FAQ

Q: What is the required installation height for the Zurn 112-375XLS?

A: The assembly must be mounted at a minimum of 12 inches and a maximum of 30 inches above adequate floor drains with sufficient side clearance for testing and maintenance.

Q: Can this backflow preventer be used outdoors?

A: The Wilkins 112-375XLS is primarily designed for indoor use. When installed indoors, an air gap adapter is required. For outdoor installations, a protective enclosure should be provided.

Q: What are the pressure and temperature ratings for this assembly?

A: The unit has a maximum working water pressure of 175 psi, a maximum working water temperature of 180°F, and a hydrostatic test pressure of 350 psi.

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