The Wilkins 1-NR3XLC is a water pressure reducing valve with integral by-pass check valve and strainer, designed to reduce high inlet pressure to a lower outlet pressure while filtering debris in residential and commercial potable water systems.

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: Copper sweat union

Other Related Variants:

• 12-NR3XLC: 1/2 Inches size version
• 34-NR3XLC: 3/4 Inches size version

Materials:

• Body: Lead-Free Cast Bronze (ASTM B 584)
• Bell Housing: UV-resistant polymer composite
• Cartridge: Acetal (Delrin)
• Elastomers: EPDM (FDA approved)
• Elastomers: Buna Nitrile (FDA approved)
• Internals: Stainless Steel, 300 Series
• Springs: 302 Stainless Steel
• Strainer Screen: 300 Series Stainless Steel
• Stem: Low Lead Brass

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 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 (ie: 200 psi inlet reduced to 50 psi outlet). CAUTION: Anytime a reducing valve is adjusted, a pressure gauge must be used downstream to verify correct pressure setting. Do not bottom adjustment bolt on bell housing.

Standards Compliance:

ASSE Listed 1003; IAPMO Listed; CSA Certified; NSF/ANSI/CAN 61 (0.25% max. weighted average lead content); NSF/ANSI/CAN 372

Features & Benefits:

• Lead-Free Compliance: Meets NSF/ANSI/CAN 61 and 372 standards for safe potable water applications with maximum 0.25% weighted average lead content.
• Integral By-Pass Check Protection: Direct acting integral by-pass design prevents buildup of excessive system pressure caused by thermal expansion.
• Balance Piston Design: Enables smooth and responsive reaction to changes in system flow demand while providing protection from inlet pressure changes.
• Easy Maintenance Access: The Zurn 1-NR3XLC assembly is accessible for maintenance without removing the device from the line; copper sweat union connections simplify soldered installation and service access.

FAQ

Q: What is the factory preset pressure for the Zurn 1-NR3XLC?

A: The valve comes factory preset at 50 psi and is adjustable within the reduced pressure range of 15 to 75 psi for 1 inch size.

Q: Can the valve be installed in any orientation?

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

Q: What type of connections does the 1-NR3XLC version have?

A: The "C" suffix indicates copper sweat (FC) union connections conforming to ANSI B16.22, ideal for copper plumbing installations.

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