Wilkins 1-350FT | 1" Double Check Valve Assembly with Ball Valves
Wilkins 1-350FT | 1" Double Check Valve Assembly with Ball Valves is backordered and will ship as soon as it is back in stock.
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For time-sensitive orders, please contact us directly so we can provide a more accurate lead time estimate based on your specific requirements.
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Special Case Shipping Rates
Please note that shipping rates are subject to change at any time. We reserve the right to charge an additional fee in addition to the regularly advertised shipping fee for shipping to remote areas not easily accessible by typical freight carrier means (i.e. islands only accessible by ferry). If your order falls into this category, you will be notified upon receipt of your order, and have the option to complete the purchase with additional fee or to cancel the order. Please note, these instances are very rare, as most locations are reachable by regular freight. If you have any questions, please contact us!
Key Terms & Conditions
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The Wilkins 1-350FT is a 1 Inches double check valve assembly designed with integral male 45° flare SAE test fitting to protect water lines against backsiphonage and backpressure where potential health hazards do not exist.
Key Specifications:
- Size: 1 Inches
- Maximum Working Water Pressure: 175 PSI
- Maximum Working Water Temperature: 180°F
- Notable Certifications: ASSE 1015, cUPC, CSA
- End Connections: Threaded ANSI B1.20.1
Other Related Variants:
- 34-350FT: 3/4 Inches version
Materials:
- Main Valve Body: Cast Bronze, ASTM B 584
- 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 Inches (305mm) and a maximum of 30 Inches (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:
- Dual Protection: Protects against both backsiphonage and backpressure of polluted water into the potable water supply.
- Durable Construction: Cast bronze body with FDA-approved silicone and Buna Nitrile elastomers ensures long-lasting performance and reliability.
- Easy Maintenance: First and second checks are accessible for maintenance without removing the Zurn 1-350FT device from the line.
- Complete Assembly: Supplied with full port QT ball valves and integral male 45° flare SAE test fitting for convenient testing and operation.
FAQ
Q: What is the required installation height for the Wilkins 1-350FT?
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 Zurn 1-350FT be installed below grade?
A: Yes, if installed below grade, be certain adequate drainage is provided to prevent the device from being submerged.
Q: What pressure and temperature ratings does this double check valve assembly have?
A: The assembly is rated for maximum working water pressure of 175 PSI and maximum working water temperature of 180°F, with a hydrostatic test pressure of 350 PSI.
NOTICE: Do not use with water that is unsafe or of unknown quality without adequate disinfection either before or after the system.
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Always consult with a licensed professional and check local codes before installation. For further details, check the Owners Manual.
Contact us at support@bottlefillingstations.com with any questions.



