The Wilkins 34-NR3XLP is a lead-free water pressure reducing valve designed for potable water systems, featuring an integral by-pass check valve and strainer to reduce high inlet pressure while protecting against thermal expansion and debris.

Key Specifications:

• Size: 3/4 Inches
• Maximum Working Water Pressure: 400 psi
• Maximum Working Water Temperature: 140°F
• Notable Certifications: ASSE 1003, NSF/ANSI/CAN 61
• Connection Type: FNPT union connections

Other Related Variants:

• 1/2-NR3XLP: 1/2 Inch version
• 1-NR3XLP: 1 Inch version
• 114-NR3XLP: 1 1/4 Inch version
• 112-NR3XLP: 1 1/2 Inch version
• 2-NR3XLP: 2 Inch version

Materials:

• Main valve body: Low Lead Cast Bronze ASTM B 584
• Bell housing: UV resistant polymer composite
• Internals: Stainless steel, 300 Series
• 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 Wilkins 34-NR3XLP may be installed in any position on potable water lines. 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 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. Suitable for residential and commercial water systems including outdoor installation, below-ground pit installation, and integration with water meters, backflow preventers, expansion tanks, and water heaters.

Standards Compliance:

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

Features & Benefits:

• Integrated 3-in-1 Design: Combines pressure reducing valve, integral by-pass check valve, and strainer in one compact unit, eliminating the need for multiple separate components and saving installation space.
• Thermal Expansion Protection: Direct acting integral by-pass design prevents buildup of excessive system pressure caused by thermal expansion, protecting plumbing fixtures and water heaters.
• Easy Maintenance Access: Balance piston design and accessible cartridge allow for servicing without removing the device from the line, reducing downtime and maintenance costs.
• Lead-Free Compliance: Certified to NSF/ANSI/CAN 61 & 372 with low lead cast bronze construction, meeting strict requirements for potable water applications including residential and commercial installations.

FAQ

Q: What is the factory preset pressure for the Zurn 34-NR3XLP and can it be adjusted?

A: The Zurn 34-NR3XLP comes factory preset at 50 psi with an adjustable reduced pressure range of 15 to 75 psi. Anytime the valve is adjusted, a pressure gauge must be used downstream to verify the correct pressure setting. Do not bottom the adjustment bolt on the bell housing.

Q: Can the Wilkins 34-NR3XLP 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 access, and local plumbing codes must be followed.

Q: When should multiple pressure reducing valves be installed instead of a single unit?

A: Multiple installations are recommended for applications with wide demand variations or where the desired pressure reduction ratio is more than 4 to 1 (for example, reducing 200 psi inlet pressure to 50 psi outlet pressure).

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