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The Wilkins 34-NR3XLDULU is a lead-free water pressure reducing valve with integral by-pass check valve and strainer, designed for residential and commercial potable water 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, NSF/ANSI/CAN 61
• Connection Type: 2 Integral FNPT (No Union)

Other Related Variants:

• 12-NR3XLDULU: 1/2 Inch model
• 1-NR3XLDULU: 1 Inch model
• 114-NR3XLDULU: 1 1/4 Inches model
• 112-NR3XLDULU: 1 1/2 Inches model
• 2-NR3XLDULU: 2 Inches model

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 Zurn 34-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 (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 & By-Pass Check Valve: Built-in strainer enables frequent cleaning of sediment and debris while the integral by-pass prevents excessive system pressure caused by thermal expansion.
• Balance Piston Design: Provides smooth and responsive reaction to changes in system flow demand while protecting against inlet pressure fluctuations.
• Lead-Free Certified: Meets NSF/ANSI/CAN 61 with 0.25% maximum weighted average lead content, ideal for potable water applications.
• Corrosion Resistant Construction: Features sealed cage washer and stainless steel adjustment components suitable for all applications including below-ground pit installation.

FAQ

Q: Can the Zurn 34-NR3XLDULU be installed in any position?

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

Q: What is the factory preset pressure setting for this valve?

A: The valve comes factory preset at 50 psi and can be adjusted within a reduced pressure range of 15 to 75 psi.

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

A: Multiple installations are recommended where the desired pressure reduction exceeds a 4 to 1 ratio (for example, reducing 200 psi inlet to 50 psi outlet).

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