The Wilkins 3-500XL is a water pressure reducing valve with integral by-pass check valve designed for commercial and industrial applications. This high-capacity valve reduces high inlet pressure to a lower outlet pressure while preventing thermal expansion pressure buildup.

Key Specifications:

• Size: 3 Inches
• Maximum Working Water Pressure: 300 psi
• Maximum Working Water Temperature: 140°F
• Notable Certifications: NSF/ANSI/CAN 61 & 372
• Threaded connections (FNPT): ANSI B1.20.1
  

Other Related Variants:

• 1/2-500XL: 1/2 Inches version
• 3/4-500XL: 3/4 Inches version
• 1-500XL: 1 Inches version
• 1 1/4-500XL: 1 1/4 Inches version
• 1 1/2-500XL: 1 1/2 Inches version
• 2-500XL: 2 Inches version
• 2 1/2-500XL: 2 1/2 Inches version

Materials:

• Body: Low Lead Cast Bronze ASTM B 584
• Access Covers: Low Lead Cast Bronze ASTM B 584
• Fasteners: Stainless Steel, 300 Series
• Stem & Plunger: Low Lead Cast Bronze ASTM B 584
• Elastomers: Buna Nitrile (FDA Approved)
• Elastomers: EPDM (FDA Approved)
• Cap Gaskets: Natural Vulcanized Fibre
• Cap Gaskets: 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 Model 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 recommend 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).

Standards Compliance:

ASSE Listed 1003 (1/2" thru 2 1/2"); cUPC Listed (1/2" thru 2"); CSA Certified B356 (1/2" thru 2"); City of Los Angeles Approved (1/2" thru 2"); NSF/ANSI/CAN 61 and 372

Features & Benefits:

• Balanced Piston Design: Provides smooth and responsive reaction to changes in system flow demand while protecting from inlet pressure changes.
• Thermal Expansion Protection: Integral by-pass design prevents buildup of excessive system pressure caused by thermal expansion.
• High Flow Capacity: Suitable for industrial water lines and commercial water systems with high demand requirements.
• Flexible Installation: Can be installed in any position with field-adjustable pressure settings for versatile application.

FAQ

Q: What pressure range can the Zurn 3-500XL reduce to?

A: The Zurn 3-500XL has a reduced pressure range of 25 psi to 75 psi and comes factory preset at 50 psi. Field adjustments can be made using a downstream pressure gauge.

Q: Can the Wilkins 3-500XL be installed in any orientation?

A: Yes, the Wilkins 3-500XL may be installed in any position. If installed in a pit, vault, or inside application, specify the "SC" sealed cage option for additional protection.

Q: When should I use multiple pressure reducing valves?

A: Multiple installations are recommended for wide demand variations or where the desired pressure reduction is more than 3 to 1 ratio (for example: 150 psi inlet reduced to 50 psi outlet).

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