The Wilkins 1-NR3XLDULU is a lead-free water pressure reducing valve with integral by-pass check valve and strainer, designed for residential and commercial applications.

Key Specifications:

• Size: 1 Inches
• Maximum Working Water Pressure: 400 psi
• Maximum Working Water Temperature: 140°F
• Notable Certifications: ASSE 1003, IAPMO, CSA
• Connection Type: 2 Integral FNPT

Other Related Variants:

• 12-NR3XLDULU: 1/2 Inches size
• 34-NR3XLDULU: 3/4 Inches size
• 114-NR3XLDULU: 1 1/4 Inches size
• 112-NR3XLDULU: 1 1/2 Inches size
• 2-NR3XLDULU: 2 Inches size

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:

The Model NR3XL 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% Maximum Weighted Average Lead Content)

Features & Benefits:

• Integral By-Pass Design: Prevents buildup of excessive system pressure caused by thermal expansion, providing comprehensive protection.
• Balance Piston Design: Enables smooth and responsive reaction to changes in system flow demand while providing protection from inlet pressure changes.
• Integrated Strainer: Most suitable for residential and commercial water systems that require frequent cleaning of sediment and debris.
• Corrosion Resistant Construction: Sealed cage washer and stainless steel adjustment components improve corrosion resistance for all applications including below-ground pit installation.

FAQ

Q: What is the factory preset pressure for the Zurn 1-NR3XLDULU?

A: The Zurn 1-NR3XLDULU comes factory preset at 50 psi and is adjustable within the reduced pressure range of 15 to 75 psi.

Q: Can this valve be installed in any orientation?

A: Yes, the Model NR3XL may be installed in any position. Ensure sufficient side clearance is provided for testing and maintenance.

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

A: Multiple installations are recommended for wide demand variations or where the desired pressure reduction exceeds a 4:1 ratio (for example, reducing 200 psi inlet to 50 psi outlet).

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