The Wilkins 4-500XL3F is a flanged water pressure reducing valve designed for commercial and industrial potable water systems, featuring a balanced piston design with patented integral venturi technology for superior flow performance and responsive pressure regulation.

Key Specifications:

• Size: 4 Inches
• Maximum Working Pressure: 400 psi
• Maximum Working Temperature: 140°F
• Notable Certifications: ASSE 1003, cUPC, CSA
• End Connections: Flanged Class 150

Other Related Variants:

• 4-500XL3FHR: Includes spring range is 60-125 psi, factory set at 85 psi
• 4-500XL3FY: Includes flanged Y strainer
  

Materials:

• Low lead cast bronze body (ASTM B806)
• Cast bronze bell housing (ASTM B584)
• Stainless steel fasteners (300 Series)
• Stainless steel stem (300 Series)
• Low lead cast bronze plunger (ASTM B806)
• Buna Nitrile elastomers (FDA approved)
• EPDM elastomers (FDA approved)
• Epoxy coated chrome silicon springs
• Noryl thermoplastic cartridge

Typical Installation:

Local codes shall govern installation requirements. The assembly shall be installed in accordance with the manufacturers' instructions and the latest edition of the Uniform Plumbing Code. The assembly shall be installed with sufficient side clearance for testing and maintenance. The Zurn 4-500XL3F may be installed in any position. Multiple installations, in series (back to back) are recommended for wide demand variations or where the desired pressure reduction is more than 3 to 1 (ie: 150 psi inlet reduced to 50 psi outlet).

Standards Compliance:

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

Features & Benefits:

• Best-in-Class Flow Performance: Patented integral venturi design delivers superior flow capacity ideal for high-demand commercial plumbing and industrial water systems.
• Balanced Piston Design: Provides smooth, responsive reaction to flow demand changes while offering protection from inlet pressure fluctuations.
• Easy Maintenance Access: Removable cartridge design allows for service without removing the body from the line; tapped and plugged for low flow bypass kit integration.
• Durable Corrosion-Resistant Construction: Low lead cast bronze body and stainless steel fasteners ensure long-lasting performance and compliance with lead-free standards.

FAQ

Q: Can the Zurn 4-500XL3F be installed in any orientation?

A: Yes, the Model 500XL3F may be installed in any position, both vertically and horizontally, providing flexibility for various plumbing configurations.

Q: What is the factory preset pressure setting for this valve?

A: The valve comes factory preset at 50 psi with a standard adjustable range of 15 psi to 75 psi (25-75 psi reduced pressure range with standard spring).

Q: Does the valve require a downstream pressure gauge for adjustment?

A: Yes, anytime the reducing valve is adjusted, a downstream pressure gauge must be used to verify correct pressure setting. The valve body is tapped and plugged for gauge installation (1/4 NPT).

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