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The Wilkins 1-500XLHLR is a water pressure reducing valve with integral by-pass check valve, designed for potable water systems requiring high flow capacity and reliable pressure control.

Key Specifications:

• Size: 1 Inches
• Maximum Working Pressure: 300 psi
• Maximum Working Temperature: 140°F
• Notable Certifications: ASSE 1003, cUPC, CSA B356
• Connection Type: Single Union FNPT

Other Related Variants:

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

Materials:

• Low Lead Cast Bronze Body (ASTM B 584)
• Low Lead Brass Components
• Stainless Steel Fasteners (300 Series)
• Stainless Steel Seat (300 Series)
• Buna Nitrile Elastomers (FDA Approved)
• EPDM Elastomers (FDA Approved)
• Oil Tempered Wire Springs (ASTM A 229)
• Natural Vulcanized Fibre Cap Gaskets
• Acetal (Delrin™ 500) Cap Gaskets

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). Caution: Anytime a reducing valve is adjusted, a pressure gauge must be used downstream to verify correct pressure setting.

Standards Compliance:

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

Features & Benefits:

• Adjustable Pressure Range: HLR option provides 10 psi to 125 psi spring range, factory set at 50 psi for versatile pressure control applications.
• Integral By-pass Check Valve: Prevents buildup of excessive system pressure caused by thermal expansion, protecting your water system.
• Balanced Piston Design: Enables smooth and responsive reaction to system flow demand changes while providing protection from inlet pressure variations.
• Flexible Installation: Can be installed in any position, making it suitable for various commercial and industrial applications including pits and vaults with SC option.

FAQ

Q: What pressure reduction ratio is recommended for the Zurn 1-500XLHLR?

A: The Zurn 1-500XLHLR is recommended for pressure reductions not exceeding a 3:1 ratio. For greater reductions, multiple installations are recommended.

Q: Can the Wilkins 1-500XLHLR be installed in any orientation?

A: Yes, the valve may be installed in any position. For pit, vault, or inside applications, the "SC" sealed cage option should be specified.

Q: How do I adjust the outlet pressure on this valve?

A: Use a downstream pressure gauge to verify correct pressure setting when adjusting. Turn the adjustment bolt on the bell housing, but do not bottom it out. Always ensure sufficient side clearance for maintenance access.

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