The Wilkins 34-NR3XLDUPEXF1960 is a water pressure reducing valve with integral by-pass check valve and strainer, designed for residential and commercial applications.

Key Specifications:

• Size: 3/4 Inches
• Maximum Working Water Pressure: 400 psi
• Maximum Working Water Temperature: 140°F
• Notable Certifications: ASSE 1003, IAPMO, CSA
• End Connections: Double Union FNPT

Other Related Variants:

• 1-NR3XLDUPEXF1960: 1 Inch model 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:

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 34-NR3XLDUPEXF1960 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)

Features & Benefits:

• Integral Strainer Design: Built-in strainer allows frequent cleaning of sediment and debris, making it ideal for residential and commercial water systems.
• Direct Acting Integral By-Pass: Prevents buildup of excessive system pressure caused by thermal expansion, protecting your plumbing system.
• Balance Piston Design: Provides smooth and responsive reaction to changes in system flow demand while offering protection from inlet pressure changes.
• Enhanced Corrosion Resistance: Sealed cage washer and stainless steel adjustment components improve durability for all applications, including below-ground pit installation.

FAQ

Q: Can the Wilkins 34-NR3XLDUPEXF1960 be installed in any orientation?

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

Q: What is the factory preset pressure for the Zurn 34-NR3XLDUPEXF1960?

A: The valve comes factory preset at 50 psi, with an adjustable reduced pressure range of 15 to 75 psi for 3/4 inch models.

Q: When should multiple pressure reducing valves be installed?

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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