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The Wilkins 112-350 is a double check valve backflow preventer designed to protect potable water systems against backsiphonage and backpressure in non-health hazard applications.

Key Specifications:

• Size: 1 1/2 Inches
• Maximum Working Water Pressure: 175 PSI
• Maximum Working Water Temperature: 180°F
• Notable Certifications: ASSE 1015, cUPC, CSA B64.5, AWWA C510
• End Connections: Threaded ANSI B1.20.1

Other Related Variants:

• 114-350: 1 1/4 Inches model size
• 1-350: 1 Inches model size
• 2-350: 2 Inches model size
• 34-350: 3/4 Inches model size

Materials:

• Cast Bronze main valve body, ASTM B 584
• Reinforced Nylon housing
• Stainless Steel fasteners, 300 Series
• Silicone elastomers, FDA Approved
• Buna Nitrile elastomers, FDA Approved
• Delrin internals, NSF Listed
• Stainless Steel springs, 300 Series
• Cast Bronze ball valves, ASTM B 584
• Stainless Steel struts, 300 Series
• Stainless Steel handles, 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 and a maximum of 30 Inches 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:

• Comprehensive Backflow Protection: Protects against both backsiphonage and backpressure of polluted water into potable water supply systems.
• Durable Construction: Features reinforced nylon housing with bronze internal components rated for 175 PSI and 180°F maximum temperature.
• Easy Maintenance Access: First and second checks are accessible for maintenance without removing the Zurn 112-350 device from the line.
• Full Port Ball Valves: Supplied with full port QT ball valves for optimal flow and reliable shut-off capability.

FAQ

Q: What applications is the Wilkins 112-350 suitable for?

A: The Wilkins 112-350 is designed for installation on water lines to protect against both backsiphonage and backpressure where a potential health hazard does not exist, making it ideal for non-health hazard applications in residential and commercial potable water systems.

Q: What are the installation height requirements for this backflow preventer?

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 in accordance with the Uniform Plumbing Code.

Q: Is the Zurn 112-350 certified for use in both the United States and Canada?

A: Yes, the Zurn 112-350 is ASSE Listed 1015, cUPC Listed, CSA Certified B64.5, and meets multiple compliance standards including AWWA C510, making it approved for use in both countries.

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