The Wilkins 1-950XLTFT is a top access double check valve assembly with Fast Test test cocks, designed to protect water lines against backsiphonage and backpressure in non-potable applications.

Key Specifications:

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

Other Related Variants:

• 3/4-950XLTFT: 3/4 Inches model size
• 1 1/4-950XLTFT: 1 1/4 Inches model size
• 1 1/2-950XLTFT: 1 1/2 Inches model size
• 2-950XLTFT: 2 Inches model size

Materials:

• Main valve body: Cast Bronze ASTM B584
• Access covers: Cast Bronze ASTM B584
• Fasteners: Stainless Steel, 300 Series
• Elastomers: Silicone and Buna Nitrile
• Polymers: Noryl™
• Springs: Stainless steel, 300 series
• Test cock cover: Plastic
• Ball valve handles: Stainless steel

Typical Installation:

Local codes shall govern installation requirements. To be installed in accordance with the manufacturer's 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 1015; cUPC; AWWA C510; CSA B64.5; NYC MEA 426-89-M VOL 3; Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California

Features & Benefits:

• Top Access Design: The Zurn 1-950XLTFT features 45-degree angled check valves accessible from the top for maintenance without removing the device from the line.
• Fast Test Technology: Equipped with Fast Test test cocks that are protected from fouling by plugs, preventing contamination from insects, dirt, and debris.
• Durable Construction: Built with cast bronze body (ASTM B584), stainless steel fasteners, and silicone elastomers for long-lasting performance in demanding environments.
• Full Port Ball Valves: Includes full port ball valves for maximum flow capacity and minimal pressure loss.

FAQ

Q: What applications is the Zurn 1-950XLTFT suitable for?

A: This assembly is designed for non-potable applications only, providing protection where a potential non-health hazard exists against backsiphonage and backpressure of polluted water into the water supply.

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.

Q: Can this valve be installed in below-grade applications?

A: Yes, but adequate drainage must be provided to prevent the device from being submerged. A protective enclosure is recommended for pit installations.

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