The Wilkins 12-600XLHR is a water pressure reducing valve with integral by-pass check valve and strainer, designed for residential and commercial potable water systems requiring reliable pressure control and thermal expansion protection.

Key Specifications:

• Size: 1/2 Inches
• Pressure Range (HR Option): 75 to 125 psi
• Maximum Working Pressure: 300 psi
• Maximum Working Temperature: 140°F
• Notable Certifications: ASSE 1003, IAPMO, CSA, NSF 61

Other Related Variants:

• 112-600XLHR: 1 1/2 Inches version
• 114-600XLHR: 1 1/4 Inches version
• 1-600XLHR: 1 Inch version
• 2-600XLHR: 2 Inches version
• 34-600XLHR: 3/4 Inches version

Materials:

• Main Valve Body & Access Covers: Low Lead Cast Bronze ASTM B 584 and Low Lead Brass
• Fasteners: Stainless Steel, 300 Series
• Stem & Plunger: Low Lead Cast Bronze ASTM B 584 and Low Lead Brass
• Elastomers: Buna Nitrile (FDA Approved) and EPDM (FDA Approved)
• Cap Gaskets: Natural Vulcanized Fibre and Acetal (Delrin™)
• Strainer Screen: Stainless Steel, 300 Series
• Seat: Stainless Steel, 300 Series

Typical Installation:

Local codes shall govern installation requirements. The Model 600XL 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 4 to 1 (i.e.: 200 psi inlet reduced to 50 psi outlet). A pressure gauge must be used downstream to verify correct pressure setting. Provide adequate side clearance for maintenance access.

Standards Compliance:

ASSE Listed 1003; IAPMO Listed; CSA Certified; City of Los Angeles Approved; NSF/ANSI/CAN 61

Features & Benefits:

• HR Spring Range: Factory set at 85 psi with 75 to 125 psi range, ideal for high-pressure applications.
• Integral By-pass Check Valve: Prevents buildup of excessive system pressure caused by thermal expansion.
• Balanced Piston Design: Provides smooth and responsive pressure regulation in both flow and no-flow conditions.
• Integral Strainer: Built-in 20 mesh stainless steel strainer protects valve from sediment and debris for extended service life.

FAQ

Q: Can the Zurn 12-600XLHR be installed in any position?

A: Yes, the Wilkins 12-600XLHR can be installed in any position. For pit or vault installations, specify the "SC" sealed cage option.

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

A: The Zurn 12-600XLHR is recommended for pressure reductions not exceeding a 4:1 ratio. For higher ratios, multiple installations are recommended.

Q: How do I adjust the pressure on the 12-600XLHR?

A: Use a downstream pressure gauge to verify correct pressure setting. Adjust the bolt on the bell housing, but do not bottom the adjustment bolt.

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