The Wilkins 34-500XL is a water pressure reducing valve with integral by-pass check valve designed for potable water lines, ideal for industrial and commercial systems requiring reliable pressure control.

Key Specifications:

• Size: 3/4 Inches
• Maximum Working Pressure: 300 psi
• Maximum Working Temperature: 140°F
• Notable Certifications: ASSE 1003, cUPC, CSA B356
• Threaded connections (FNPT): ANSI B1.20.1
  

Other Related Variants:

• 12-500XL: 1/2 Inch model size
• 1-500XL: 1 Inch model size
• 114-500XL: 1 1/4 Inch model size
• 112-500XL: 1 1/2 Inch model size
• 212-500XL: 2 1/2 Inch model size
• 3-500XL: 3 Inch model size

Materials:

• Main valve body: Low Lead Cast Bronze ASTM B 584
• Access covers: Low Lead Cast Bronze ASTM B 584 / Low Lead Brass
• Fasteners: Stainless Steel, 300 series
• Stem & plunger: Low Lead Cast Bronze ASTM B 584 / Low Lead Brass
• Elastomers: Buna Nitrile (FDA approved) / EPDM (FDA approved)
• Cap gaskets: Natural vulcanized fibre / Acetal (Delrin 500)
• Springs: Oil tempered wire, ASTM A 229
• Seat: Stainless Steel, 300 series

Typical Installation:

Local codes shall govern installation requirements. Unless otherwise specified, the assembly shall be mounted in accordance with the manufacturers' instructions and the latest edition of the Uniform Plumbing Code. The assembly shall be installed with sufficient side clearance for testing and maintenance. The Zurn 34-500XL may be installed in any position. If installed in a pit, vault, or inside application, specify the "SC" sealed cage option. Multiple installations are recommended for wide demand variations or where the desired pressure reduction is more than 3 to 1 (i.e.: 150 psi inlet reduced to 50 psi outlet). Anytime a reducing valve is adjusted, a pressure gauge must be used downstream to verify correct pressure setting.

Standards Compliance:

ASSE Listed 1003; cUPC Listed; CSA Certified B356; City of Los Angeles Approved; NSF/ANSI/CAN 61; NSF/ANSI/CAN 372

Features & Benefits:

• High Flow Capacity: Designed for industrial water lines and commercial water systems with superior flow performance.
• Balanced Piston Design: Provides smooth, responsive reaction to system flow demand changes while protecting against inlet pressure fluctuations.
• Integral By-pass Check Valve: Prevents buildup of excessive system pressure caused by thermal expansion.
• Flexible Installation: Can be installed in any position with accessible maintenance without removing body from the line.

FAQ

Q: What is the factory preset pressure for the Wilkins 34-500XL?

A: The Zurn 34-500XL comes factory preset at 50 psi, with an adjustable reduced pressure range of 25 to 75 psi.

Q: Can this valve be installed in any orientation?

A: Yes, the Model 500XL may be installed in any position. However, if installed in a pit, vault, or inside application, the "SC" sealed cage option should be specified.

Q: What is the maximum pressure reduction ratio recommended for this valve?

A: Multiple installations are recommended where the desired pressure reduction is more than 3 to 1 ratio (e.g., 150 psi inlet reduced to 50 psi outlet).

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