The Wilkins 34-350 is a double check valve assembly designed to protect potable water lines against backsiphonage and backpressure of polluted water.

Key Specifications:

• Size: 3/4 Inches
• Maximum Working Water Pressure: 175 PSI
• Maximum Working Water Temperature: 180°F
• Notable Certifications: ASSE 1015, CSA B64.5, AWWA C510
• End Connections: Threaded ANSI B1.20.1

Other Related Variants:

• 1-350: 1 Inch model size
• 114-350: 1 1/4 Inch model size
• 112-350: 1 1/2 Inch model size
• 2-350: 2 Inch model size

Materials:

• Main valve body: Cast Bronze, ASTM B 584 (3/4-1")
• Housing: Reinforced Nylon
• Fasteners: Stainless Steel, 300 Series
• Elastomers: Silicone (FDA Approved)
• Elastomers: Buna Nitrile (FDA Approved)
• Internals: Delrin, NSF Listed
• Springs: Stainless Steel, 300 series
• Ball Valves: Cast Bronze, ASTM B 584
• Struts: Stainless Steel, 300 Series
• Handles: 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. If installed below grade, be certain adequate drainage is provided to prevent the device from being submerged.

Standards Compliance:

ASSE Listed 1015; cUPC Listed; CSA Certified B64.5; AWWA Compliant C510; Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California; UL Classified (less shut-off valves only); C-UL Classified (less shut-off valves only)

Features & Benefits:

• Backflow Protection: Protects against both backsiphonage and backpressure of polluted water into potable water supply where a potential health hazard does not exist.
• Durable Construction: The Zurn 34-350 features reinforced nylon housing with cast bronze valve body and stainless steel components for long-lasting performance.
• Easy Maintenance: First and second checks are accessible for maintenance without removing the device from the line.
• Versatile Installation: Suitable for indoor or outdoor installation with optional strainer and blow-off fittings for enhanced functionality.

FAQ

Q: What is the maximum working pressure and temperature for the Wilkins 34-350?

A: The Zurn 34-350 is rated for a maximum working water pressure of 175 PSI and a maximum working water temperature of 180°F.

Q: Can the Wilkins 34-350 be installed both horizontally and vertically?

A: Yes, the assembly is certified for both horizontal and vertical installation according to ASSE 1015 and CSA B64.5 standards.

Q: What accessories are available for the Model 350?

A: Available accessories include repair kits, thermal expansion tank (Model XT), QT-SET Quick Test Fitting Set, and winterizing blow out/flush fittings.

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