The Wilkins 34-NR3XLDUCPVC is a lead-free water pressure reducing valve 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: Double Union FNPT CPVC

Other Related Variants:

• 1-NR3XLDUCPVC: 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. 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 By-Pass Check Valve and Strainer: Prevents buildup of excessive system pressure caused by thermal expansion while providing easy sediment and debris cleaning.
• Lead-Free Construction: Complies with NSF/ANSI/CAN 61 with 0.25% maximum weighted average lead content, ideal for potable water applications.
• Balance Piston Design: Ensures smooth and responsive reaction to changes in system flow demand while providing protection from inlet pressure changes.
• Corrosion-Resistant Components: Features sealed cage washer and stainless steel adjustment bolt suitable for all applications including below-ground pit installation.

FAQ

Q: Can the Zurn 34-NR3XLDUCPVC 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.

Q: What is the recommended pressure reduction ratio for the Wilkins 34-NR3XLDUCPVC?

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

Q: How do I adjust the outlet pressure on the Zurn 34-NR3XLDUCPVC?

A: Always use a downstream pressure gauge to verify correct pressure setting when adjusting the valve. Do not bottom the adjustment bolt on the bell housing during adjustment. The valve is factory preset to 50 psi with an adjustable range of 15 to 75 psi.

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