The Wilkins 34-500XLHLR is a water pressure reducing valve with integral by-pass check valve, designed to reduce high inlet pressure to a lower outlet pressure for commercial and industrial water systems.

Key Specifications:

• Size: 3/4 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:

• 112-500XLHLR: 1 1/2 Inches size
• 114-500XLHLR: 1 1/4 Inches size
• 1-500XLHLR: 1 Inches size
• 2-500XLHLR: 2 Inches size
• 3-500XLHLR: 3 Inches size

Materials:

• Body: Low Lead Cast Bronze ASTM B 584
• Access Covers: Low Lead Brass
• 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 Zurn 34-500XLHLR 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).

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: Balanced piston design provides smooth and responsive pressure regulation for industrial and commercial water systems.
• Thermal Expansion Protection: Direct acting integral by-pass design prevents buildup of excessive system pressure caused by thermal expansion.
• Flexible Installation: Can be installed in any position with side clearance for maintenance, suitable for various applications.
• Extended Pressure Range: HLR option offers 10 psi to 125 psi spring range, factory set at 50 psi for versatile applications.

FAQ

Q: Can the Wilkins 34-500XLHLR be installed in any orientation?

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

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

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

Q: How do I adjust the pressure setting on the Zurn 34-500XLHLR?

A: Anytime a reducing valve is adjusted, a pressure gauge must be used downstream to verify correct pressure setting. Do not bottom the adjustment bolt on bell housing.

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