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The Wilkins 1-NR3XLHRSC is a water pressure reducing valve with integral by-pass check valve and strainer, designed for residential and commercial potable water systems requiring high-range pressure control with enhanced corrosion resistance.

Key Specifications:

• Size: 1 Inches
• Maximum Working Water Pressure: 400 psi
• Maximum Working Water Temperature: 140°F
• Notable Certifications: ASSE 1003, IAPMO Listed, CSA Certified
• Pressure Range: 15-125 psi (High-Range)

Other Related Variants:

• 1 1/4-NR3XLHRSC: 1 1/4 Inches version
• 3/4-NR3XLHRSC: 3/4 Inches version

Materials:

• Main valve body: Low Lead Cast Bronze ASTM B584
• Bell housing: UV-Resistant Polymer Composite
• Internals: 300 Series Stainless Steel
• Stem: Low Lead Brass
• Elastomers: EPDM (FDA approved)
• Elastomers: Buna Nitrile (FDA approved)
• Cartridge: Delrin
• Springs: 302 Stainless Steel
• Strainer screen: 300 Series Stainless Steel

Typical Installation:

Local codes shall govern installation requirements. Unless otherwise specified, the assembly shall be mounted in accordance with the latest edition of the Uniform Plumbing Code. The Zurn 1-NR3XLHRSC may be installed in any position. The assembly shall be installed with sufficient side clearance for testing and maintenance. Multiple installations are recommended for wide demand variations or where the desired pressure reduction is more than 4 to 1. Anytime a reducing valve is adjusted, a pressure gauge must be used downstream to verify correct pressure setting.

Standards Compliance:

ASSE Listed 1003; IAPMO Listed; CSA Certified; NSF/ANSI/CAN 61 (0.25% Max Weighted Average Lead Content)

Features & Benefits:

• High-Range Pressure Control: Adjustable pressure range from 15-125 psi provides versatile control for various system requirements.
• Enhanced Corrosion Resistance: Sealed cage design with stainless steel adjustment bolt and nut ensures superior protection for all applications including below-ground pit installations.
• Integral By-Pass Protection: Direct acting integral by-pass design prevents buildup of excessive system pressure caused by thermal expansion.
• Easy Maintenance: Integral strainer design allows frequent cleaning of sediment and debris without removing valve from line; accessible for maintenance in any position.

FAQ

Q: What is the recommended pressure reduction ratio for the Wilkins 1-NR3XLHRSC?

A: The valve is designed for pressure reductions not exceeding a 4:1 ratio. For greater reductions, multiple installations are recommended.

Q: Can this valve be installed in any orientation?

A: Yes, the Zurn 1-NR3XLHRSC may be installed in any position, but sufficient side clearance must be provided for testing and maintenance.

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

A: Always use a downstream pressure gauge when adjusting the valve to verify correct pressure setting within the 15-125 psi range. Do not bottom the adjustment bolt on the bell housing.

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