The Wilkins 34-375XL is a reduced pressure principle backflow assembly designed to protect potable water systems from contamination caused by backsiphonage and backpressure.

Key Specifications:

• Size: 3/4 Inches
• Maximum Working Water Pressure: 175 PSI
• Maximum Working Water Temperature: 180°F
• Notable Certifications: ASSE 1013, NSF/ANSI/CAN 61 & 372
• End Connections: Threaded FNPT ANSI B1.20.1

Other Related Variants:

• 112-375XL: 1 1/2 Inches model size
• 114-375XL: 1 1/4 Inches model size
• 12-375XL: 1/2 Inches model size
• 1-375XL: 1 Inch model size
• 2-375XL: 2 Inches model size

Materials:

• Reinforced Nylon housing (FDA approved)
• Stainless Steel fasteners (300 Series)
• Silicone elastomers (FDA Approved)
• Buna Nitrile elastomers (FDA Approved)
• Delrin internals
• Nylon internals
• Stainless Steel springs (300 series)
• Low Lead 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; NSF/ANSI/CAN 61 and 372

Features & Benefits:

• Lead-Free Protection: Meets NSF/ANSI/CAN 372 requirements with less than 0.25% weighted average lead content, ideal for potable water applications.
• Dual Protection: The Zurn 34-375XL protects against both backsiphonage and backpressure of contaminated water into potable water supply.
• Durable Construction: Reinforced nylon body with stainless steel components ensures long-lasting performance rated to 175 PSI and 180°F.
• Versatile Installation: Suitable for both indoor and outdoor installation with optional air gap and strainer configurations for maximum flexibility.

FAQ

Q: What is the required installation height for the Zurn Wilkins 34-375XL?

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: Can the Wilkins 34-375XL be used for both indoor and outdoor applications?

A: Yes, the Wilkins 34-375XL can be installed both indoors and outdoors. For indoor installations, an air gap adapter should be supplied. Outdoor installations require a protective enclosure.

Q: What certifications does the Model 375XL hold?

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 for lead-free compliance.

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