The Wilkins 112-NR3XL is a water pressure reducing valve with integral by-pass check valve and strainer, designed for residential and commercial potable water systems requiring reliable pressure control and thermal expansion protection.

Key Specifications:

• Size: 1 1/2 Inches
• Maximum Working Water Pressure: 300 psi
• Maximum Working Water Temperature: 140°F
• Notable Certifications: ASSE 1003, IAPMO, CSA
• Threaded Connections: FNPT ANSI B1.20.1
  

Other Related Variants:

• 12-NR3XL: 1/2 Inch model size
• 34-NR3XL: 3/4 Inch model size
• 1-NR3XL: 1 Inch model size
• 114-NR3XL: 1 1/4 Inch model size
• 2-NR3XL: 2 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:

The Zurn 112-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. 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: Prevents buildup of excessive system pressure caused by thermal expansion, protecting water heaters and plumbing systems.
• Built-In Strainer: Integral strainer design captures sediment and debris, making the Zurn 112-NR3XL ideal for residential and commercial systems requiring frequent cleaning.
• Balance Piston Design: Provides smooth and responsive reaction to system flow demand changes while offering protection from inlet pressure fluctuations.
• Flexible Installation: Can be installed in any position with sealed cage washer and stainless steel adjustment components for corrosion resistance, including below-ground pit applications.

FAQ

Q: Can the Wilkins 112-NR3XL be serviced without removing it from the line?

A: Yes, the assembly is accessible for maintenance without removing the device from the line, though sufficient side clearance must be provided during installation.

Q: What is the factory preset pressure for the 112-NR3XL?

A: The valve comes factory preset at 50 psi, with an adjustable reduced pressure range of 25 to 75 psi for 1 1/2 inch models.

Q: When should multiple pressure reducing valves be installed?

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).

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