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The Wilkins 34-950XLT is a top access double check valve assembly designed to protect water lines against backsiphonage and backpressure of polluted water into potable water supplies.

Key Specifications:

• Size: 3/4 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:

• 112-950XLT: 1 1/2 Inches model size
• 1-950XLT: 1 Inch model size
• 2-950XLT: 2 Inches model size

Materials:

• Main valve body: Cast Bronze ASTM B 584
• Access covers: Cast Bronze ASTM B 584
• 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 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; AWWA Compliant C510; CSA Certified B64.5; NYC MEA 426-89-M VOL 3; Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California

Features & Benefits:

• Top Access Design: The Zurn 34-950XLT features 45-degree angled check valves accessible from the top for easy maintenance without removing the device from the line.
• Full Port Ball Valves: Equipped with full port ball valves to ensure maximum flow capacity and minimal pressure loss during operation.
• Test Cock Protection: The Zurn 34-950XLT includes test cock plugs that protect against fouling caused by insects, dirt, and debris for reliable long-term performance.
• Durable Construction: Built with cast bronze body and stainless steel components for superior durability and corrosion resistance in demanding applications.

FAQ

Q: Can the 950XLT be installed in both horizontal and vertical orientations?

A: Yes, the assembly is ASSE Listed 1015 for horizontal installation in all sizes (3/4" through 2"). Vertical flow-up installation is approved for 1 1/4" through 2" sizes.

Q: What type of applications is this double check valve assembly suitable for?

A: This assembly is designed for non-potable applications only, providing protection where a potential non-health hazard exists on water lines against backsiphonage and backpressure.

Q: How do I maintain and test the 950XLT assembly?

A: The top access design allows maintenance without removing the device from the line. Each check has separate access covers and test cocks accessible from the top. Install with sufficient side clearance for testing and maintenance procedures.

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