The Wilkins 2-NR3XLDULU is a water pressure reducing valve with integral by-pass check valve and strainer, designed for residential and commercial potable water systems requiring efficient pressure control and thermal expansion protection.

Key Specifications:

• Size: 2 Inches
• Maximum Working Water Pressure: 300 psi
• Maximum Working Water Temperature: 140°F
• Notable Certifications: ASSE 1003, IAPMO, CSA
• End Connections: 2 Integral FNPT

Other Related Variants:

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

Materials:

• Main valve body: Low Lead Cast Bronze ASTM B 584
• 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 Zurn 2-NR3XLDULU 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. A pressure gauge must be used downstream to verify correct pressure setting when adjusting the valve.

Standards Compliance:

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

Features & Benefits:

• Thermal Expansion Protection: Direct acting integral by-pass design prevents excessive system pressure buildup 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.
• Corrosion Resistance: Sealed cage washer and stainless steel adjustment components improve corrosion resistance for all applications including below-ground pit installation.
• Easy Maintenance: Integral strainer allows frequent cleaning of sediment and debris; assembly is accessible for maintenance without removing device from line.

FAQ

Q: Can the Wilkins 2-NR3XLDULU be installed in any orientation?

A: Yes, the 2-NR3XLDULU may be installed in any position. Ensure sufficient side clearance is provided for testing and maintenance access.

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

A: Multiple installations are recommended for pressure reductions exceeding a 4:1 ratio. For example, reducing 200 psi inlet to 50 psi outlet is at the maximum recommended ratio.

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

A: Always use a downstream pressure gauge when adjusting. Do not bottom the adjustment bolt on the bell housing. The valve comes factory preset to 50 psi with an adjustable range of 25-75 psi.

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