The Wilkins 3-500XL3 is a 3 inch water pressure reducing valve engineered for high-demand commercial, institutional, and industrial potable water systems, featuring balanced piston design and integral venturi for superior flow performance.

Key Specifications:

• Size: 3 Inches
• Maximum Working Water Pressure: 400 PSI
• Maximum Operating Temperature: 140°F
• Notable Certifications: ASSE 1003, cUPC, CSA B356
• Threaded connections (FNPT): ANSI B1.20.1
  

Other Related Variants:

• 1-500XL3: 1 Inch version
• 1 1/4-500XL3: 1 1/4 Inch version
• 1 1/2-500XL3: 1 1/2 Inch version
• 2-500XL3: 2 Inch version
• 2 1/2-500XL3: 2 1/2 Inch version
• 4-500XL3F: 4 Inch flanged version

Materials:

• Main valve body: Low lead cast bronze ASTM B806
• Bell housing: Cast bronze ASTM B584
• Fasteners: Stainless steel, 300 series
• Stem: Stainless steel, 300 series
• Plunger: Low lead cast bronze ASTM B806
• Elastomers: Buna Nitrile (FDA approved)
• Elastomers: EPDM (FDA approved)
• Springs: Chrome Silicon, Epoxy Coated
• Cartridge: Noryl™

Typical Installation:

The Zurn 3-500XL3 may be installed in any position including horizontal and vertical orientations. Multiple installations in series are required when the desired pressure reduction is more than 3 to 1 ratio. The assembly shall be installed with sufficient side clearance for testing and maintenance. If using a 3 inch valve at low flows and higher pressure reduction ratios above 3 to 1, a low flow bypass may be needed to handle flows under 10 gpm. Local codes shall govern installation requirements and the assembly shall be mounted in accordance with the manufacturer's instructions and the latest edition of the Uniform Plumbing Code.

Standards Compliance:

ASSE Listed 1003; cUPC Listed; CSA Certified B356; NSF/ANSI/CAN 61; NSF/ANSI/CAN 372

Features & Benefits:

• Balanced Piston Design: Provides smooth and responsive pressure regulation while protecting against inlet pressure changes and reacting effectively to system flow demand fluctuations.
• Integral Venturi Technology: Patented design delivers best-in-class flow performance, making the Wilkins 3-500XL3 ideal for high-capacity commercial plumbing and industrial water applications.
• Removable Cartridge Design: Allows for easy maintenance and servicing without removing the valve body from the line, reducing downtime and installation costs.
• Corrosion-Resistant Construction: Built with low lead cast bronze and stainless steel components to ensure long-lasting durability and compliance with potable water standards.

FAQ

Q: What is the adjustable pressure range for the Zurn 3-500XL3?

A: The reduced pressure range is adjustable from 15 PSI to 75 PSI, with a factory preset at 50 PSI. Always use a downstream pressure gauge when adjusting to verify correct pressure setting.

Q: Can this valve be installed in any orientation?

A: Yes, the Model 500XL3 may be installed in any position, including horizontal and vertical orientations, providing flexibility for various installation requirements.

Q: When should I use multiple valves in series?

A: Multiple installations in series are required when the desired pressure reduction is more than 3 to 1 ratio (for example, reducing 150 PSI inlet to 50 PSI outlet). For pressure reduction ratios above 3 to 1 at low flows, a low flow bypass may also be needed.

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