The Wilkins 34-NR3XLDUPEX is a lead-free water pressure reducing valve with integral by-pass check valve and strainer for residential and commercial systems.

Key Specifications:

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

Other Related Variants:

• 1-NR3XLDUPEX: 1 Inch 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:

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). 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% MAX. WEIGHTED AVERAGE LEAD CONTENT)

Features & Benefits:

• Integral By-Pass Check Valve: Prevents buildup of excessive system pressure caused by thermal expansion.
• Balance Piston Design: Smooth and responsive reaction to system flow demand changes while providing protection from inlet pressure changes.
• Integral Strainer: Suitable for frequent cleaning of sediment and debris in residential and commercial water systems.
• Sealed Cage Design: Stainless steel adjustment bolt and nut improve corrosion resistance for all applications including below-ground pit installation.

FAQ

Q: Can the Zurn 34-NR3XLDUPEX be installed in any position?

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

Q: What is the factory preset pressure for the Wilkins 34-NR3XLDUPEX?

A: The valve comes factory preset at 50 psi and is adjustable within the range of 15 to 75 psi.

Q: What is the recommended pressure reduction ratio for the Zurn 34-NR3XLDUPEX?

A: Multiple installations are recommended where the desired pressure reduction is more than 4 to 1 (for example: 200 psi inlet reduced to 50 psi outlet).

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