The Wilkins 1-375XLS is a lead-free reduced pressure principle assembly designed to protect potable water systems 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:

• 375XLFT: With integral male 45° flare SAE test fitting
• 375XLS: With Model SXL lead-free bronze "Y" type strainer
• 375XLSAG: With Model SXL lead-free bronze "Y" strainer and air gap
• 375XLAG: With air gap
• 375XLB: With black fusion epoxy coated ball valves and struts for theft protection

Materials:

• Housing: Reinforced Nylon (FDA approved)
• Fasteners: Stainless Steel, 300 Series
• Elastomers: Silicone (FDA Approved)
• Elastomers: Buna Nitrile (FDA Approved)
• Internals: Delrin, Nylon
• Springs: Stainless Steel, 300 Series
• Ball Valves: Low Lead Cast Bronze, ASTM B 584
• Struts: Stainless Steel, 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" (305mm) and a maximum of 30" (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; NSF/ANSI/CAN 61 and 372

Features & Benefits:

• Lead-Free Construction: Meets NSF/ANSI/CAN 372 with less than 0.25% weighted average lead content for safe potable water applications.
• Dual Protection: The Zurn 1-375XLS protects against both backsiphonage and backpressure where potential health hazards exist.
• Durable Materials: Reinforced nylon housing with stainless steel components and FDA-approved elastomers ensure long-lasting performance.
• Easy Maintenance: Full port QT ball valves and accessible design allow for simplified testing and maintenance procedures.

FAQ

Q: What is the maximum working pressure and temperature for the Wilkins 1-375XLS?

A: The assembly is rated for a maximum working water pressure of 175 PSI and maximum working water temperature of 180°F.

Q: What are the minimum and maximum installation heights?

A: The Zurn 1-375XLS 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 certifications does this backflow preventer have?

A: The Model 375XL is ASSE Listed 1013, cUPC Listed, CSA Certified B64.4, AWWA compliant C511, and meets NSF/ANSI/CAN 61 and 372 requirements.

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