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The Wilkins 1-500XLYSBR is a water pressure reducing valve with integral bypass check valve, designed for commercial and industrial applications requiring reliable pressure control and thermal expansion protection.

Key Specifications:

• Size: 1 Inches
• Maximum Working Water Pressure: 300 psi
• Maximum Working Water Temperature: 140°F
• Notable Certifications: ASSE 1003, cUPC, NSF/ANSI/CAN 61
• Connection Type: Single Union FNPT

Other Related Variants:

• 112-500XLYSBR: 1 1/2 Inches model size
• 114-500XLYSBR: 1 1/4 Inches model size
• 212-500XLYSBR: 2 1/2 Inches model size
• 2-500XLYSBR: 2 Inches model size
• 34-500XLYSBR: 3/4 Inches model size
• 3-500XLYSBR: 3 Inches 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)
• Springs: Oil Tempered Wire, ASTM A 229
• Seat: Stainless Steel, 300 series
• Strainer: Lead-Free Bronze

Typical Installation:

Local codes shall govern installation requirements. 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 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:

• Thermal Expansion Protection: Integral by-pass check valve prevents excessive system pressure buildup caused by thermal expansion.
• Balanced Piston Design: Provides smooth, responsive reaction to flow demand changes while protecting against inlet pressure variations.
• Lead-Free Bronze Y-Strainer: Includes integral YSBR strainer on inlet for debris protection and enhanced system longevity.
• Flexible Installation: Can be installed in any position with field-adjustable pressure settings from 25-75 psi.

FAQ

Q: What is the factory preset pressure for the Zurn 1-500XLYSBR?

A: The Zurn 1-500XLYSBR comes factory preset at 50 psi and is field adjustable within the 25-75 psi range.

Q: Can this valve be installed in a pit or vault application?

A: Yes, when installed in pits, vaults, or inside applications, specify the "SC" sealed cage option for proper protection.

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

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

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