The Wilkins 1-NR3XLDUC 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.

Key Specifications:

• Size: 1 Inches
• Maximum Working Pressure: 400 psi
• Maximum Working Temperature: 140°F
• Notable Certifications: ASSE 1003, IAPMO, CSA
• Connection Type: Double Union FC (Copper Sweat)

Other Related Variants:

• 12-NR3XLDUC: 1/2 Inches model size
• 34-NR3XLDUC: 3/4 Inches model size
• 114-NR3XLDUC: 1 1/4 Inches model size
• 112-NR3XLDUC: 1 1/2 Inches model size
• 2-NR3XLDUC: 2 Inches model 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 1-NR3XLDUC may be installed in any position on potable water lines. 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 ratio (i.e., 200 psi inlet reduced to 50 psi outlet). A pressure gauge must be used downstream to verify correct pressure setting during adjustment.

Standards Compliance:

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

Features & Benefits:

• Integral By-Pass Design: Prevents buildup of excessive system pressure caused by thermal expansion while maintaining consistent outlet pressure.
• Balanced Piston Design: Provides smooth and responsive reaction to changes in system flow demand with protection from inlet pressure fluctuations.
• Built-In Strainer: Makes the Wilkins 1-NR3XLDUC suitable for systems requiring frequent cleaning of sediment and debris without additional components.
• Lead-Free Compliance: Meets NSF/ANSI/CAN 61 standards with 0.25% maximum weighted average lead content for safe potable water applications.

FAQ

Q: What is the factory preset pressure for the 1-NR3XLDUC?

A: The Zurn 1-NR3XLDUC comes factory preset at 50 psi and is adjustable within the 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, but sufficient side clearance must be provided for testing and maintenance access.

Q: What connection type does the 1-NR3XLDUC model feature?

A: The 1-NR3XLDUC features Double Union FC (copper sweat) connections conforming to ANSI B16.22 standards.

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