Wilkins 1-350XL | Double Check Valve Assembly
Wilkins 1-350XL | Double Check Valve Assembly is backordered and will ship as soon as it is back in stock.
Shipping
Shipping
🚚✨ Free Shipping in the Continental U.S.
All Products. No Minimums.
Estimated Shipping Times:
Important Note on Delivery Times
All shipping estimates provided are approximate only. While we always strive to meet or exceed your delivery expectations, we cannot guarantee the exact delivery times listed.
For time-sensitive orders, please contact us directly so we can provide a more accurate lead time estimate based on your specific requirements.
Same Day Shipping
All in stock orders received before 3PM EST will ship the same day. Orders received after 3PM EST will ship the following business day.
Water Filters, Hand Dryers, & Indoor Bottle Fillers are our most popular in stock items.
Outdoor Tubular Drinking Fountains
Evergreen normally ships in 5-15 days. Black, Gray and Blue ship in 2-4 weeks.
Ice Machines
In stock units ship within 48 hours. Other units normally ship in 2-4 weeks.
Other
Orders that ship directly from a manufacturer normally have a firm shipping estimate but those dates are subject to change due to manufacturer production, inventory or shipping. We do our best to estimate ship dates but orders shipping directly from the manufacturer can have unexpected delays. We will confirm tracking information when orders ship directly from a manufacturer but may not have updates or estimates beyond the original estimate. Once your order is placed with the manufacturer, it may not be able to be cancelled even if it hasn't shipped yet.
Please contact support@bottlefillingstations.com to confirm delivery time for a specific product or quantity. Or to inquire about an existing order.
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
Exceptions may apply to islands and other remote territories.
All orders shipped by the carrier of our choice.
The Wilkins 1-350XL is a double check valve assembly designed for potable water systems to prevent backsiphonage and backpressure of polluted water into the water supply.
Key Specifications:
- Size: 1 Inches
- Maximum Working Pressure: 175 PSI
- Maximum Working Temperature: 180°F
- Notable Certifications: ASSE 1015, NSF/ANSI/CAN 61 & 372
- End Connections: Threaded ANSI B1.20.1
Other Related Variants:
- 34-350XL: 3/4 Inches version
- 114-350XL: 1 1/4 Inches version
- 112-350XL: 1 1/2 Inches version
- 2-350XL: 2 Inches version
Materials:
- Low Lead Cast Bronze body (ASTM B 584)
- Reinforced Nylon housing
- Stainless Steel fasteners (300 Series)
- Silicone elastomers (FDA Approved)
- Buna Nitrile elastomers (FDA Approved)
- Delrin internals
- Stainless Steel springs (300 Series)
- Low Lead Cast Bronze ball valves (ASTM B 584)
- Stainless Steel struts (300 Series)
- Stainless Steel handles (200 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. Suitable for both indoor and outdoor installation.
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); NSF/ANSI/CAN 61 & 372
Features & Benefits:
- Backflow Prevention: Protects potable water systems against both backsiphonage and backpressure in non-health hazard applications.
- Lead-Free Compliance: Certified to NSF/ANSI/CAN 61 and 372 with less than 0.25% weighted average lead content for safe drinking water applications.
- Durable Construction: Features low lead cast bronze body, reinforced nylon housing, and stainless steel internals for long-lasting performance.
- Easy Maintenance: First and second checks are accessible for maintenance without removing the Zurn 1-350XL device from the line, and includes full port ball valves for convenient operation.
FAQ
Q: What is the hydrostatic test pressure rating for the Zurn 1-350XL?
A: The hydrostatic test pressure rating is 350 PSI, ensuring robust performance and reliability in potable water systems.
Q: Can this double check valve assembly be installed vertically?
A: Yes, the assembly is certified for both horizontal and vertical installation according to ASSE 1015 standards.
Q: What accessories are available for the Model 350XL?
A: Available accessories include repair kits, thermal expansion tank (Model XT), QT-SET Quick Test Fitting Set, and winterizing blow out/flush fittings.
NOTICE: Do not use with water that is unsafe or of unknown quality without adequate disinfection either before or after the system.
"Hydrate Everyone, Everywhere!" BottleFillingStations.com | Contact us
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.




