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The Wilkins 212-500XLHR is a high-performance water pressure reducing valve with integral by-pass check valve, designed for commercial and industrial applications requiring reliable pressure control and thermal expansion protection.

Key Specifications:

• Size: 2 1/2 Inches
• Maximum Working Water Pressure: 300 psi
• Maximum Working Water Temperature: 140°F
• Notable Certifications: ASSE 1003, NSF/ANSI/CAN 61 & 372
• Connection Type: Less Union Connection

Other Related Variants:

• 112-500XLHR: 1 1/2 Inches model size
• 114-500XLHR: 1 1/4 Inches model size
• 1-500XLHR: 1 Inch model size
• 2-500XLHR: 2 Inches model size
• 3-500XLHR: 3 Inches model size

Materials:

• 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. The assembly shall be mounted with sufficient side clearance for testing and maintenance. The Zurn 212-500XLHR 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 ratio. 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 Pressure Range: HR option provides 75 psi to 125 psi spring range, factory set at 85 psi for demanding applications.
• Thermal Expansion Protection: Integral by-pass check valve design prevents buildup of excessive system pressure caused by thermal expansion.
• Balanced Piston Design: Enables smooth and responsive reaction to changes in system flow demand while providing protection from inlet pressure changes.
• Versatile Installation: Can be installed in any position with field-adjustable pressure settings for flexible system configurations.

FAQ

Q: What is the pressure reduction ratio recommended for the Wilkins 212-500XLHR?

A: Pressure reductions should not exceed a 3:1 ratio. For greater reductions, multiple valve installations are recommended to ensure optimal performance and longevity.

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

A: Yes, the Zurn 212-500XLHR can be installed in pits or vaults. For these applications, specify the "SC" sealed cage option to provide proper protection against environmental conditions.

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

A: Use a downstream pressure gauge to monitor and verify pressure settings. Adjust using the bolt on the bell housing. Never bottom out the adjustment bolt. The HR option comes factory set at 85 psi but is field adjustable within the 75-125 psi range.

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