The Wilkins 12-NR3XLDUC is a water pressure reducing valve with integral by-pass check valve and strainer, designed for residential and commercial potable water systems requiring pressure regulation and thermal expansion protection.

Key Specifications:

• Size: 1/2 Inches
• Maximum Working Water Pressure: 400 psi
• Maximum Working Water Temperature: 140°F
• Notable Certifications: ASSE 1003, IAPMO, CSA
• Connection Type: Double Union FC (Copper Sweat)

Other Related Variants:

• 34-NR3XLDUC: 3/4 Inch size model
• 1-NR3XLDUC: 1 Inch size model
• 114-NR3XLDUC: 1 1/4 Inches size model
• 112-NR3XLDUC: 1 1/2 Inches size model
• 2-NR3XLDUC: 2 Inches size 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) and Buna Nitrile (FDA approved)
• Cartridge: Delrin™
• Springs: 302 Stainless Steel
• Strainer Screen: 300 Series Stainless Steel

Typical Installation:

Local codes shall govern installation requirements. 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, protecting your plumbing system and water heater.
• Balance Piston Design: Provides smooth and responsive reaction to changes in system flow demand while offering protection from inlet pressure changes.
• Integrated Strainer: Suitable for systems requiring frequent cleaning of sediment and debris, eliminating the need for a separate strainer installation.
• Lead-Free Construction: Meets NSF/ANSI/CAN 61 standards with 0.25% maximum weighted average lead content, ensuring safe potable water applications.

FAQ

Q: Can the Zurn 12-NR3XLDUC 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 factory preset pressure for this valve?

A: The Zurn 12-NR3XLDUC comes factory preset at 50 psi and is adjustable 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 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). Always use a downstream pressure gauge when adjusting the valve.

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