The Wilkins 4-500XL3FY is a 4-inch flanged water pressure reducing valve featuring an integral epoxy coated ductile iron Y strainer for superior inlet debris protection and reliable downstream pressure control in commercial and industrial applications.

Key Specifications:

• Size: 4 Inches
• Maximum Working Pressure: 400 psi
• Maximum Working Temperature: 140°F
• Notable Certifications: ASSE 1003, cUPC, CSA B356, NSF/ANSI/CAN 61 & 372
• End Connections: ANSI B16.24 Class 150 Flanged

Other Related Variants:

• 4-500XL3F: 4 Inches without Y strainer
• 4-500XL3FHR: 4 Inches with high pressure range (60-125 psi)

Materials:

• Body: Low Lead Cast Bronze ASTM B806
• Strainer: Epoxy Coated Ductile Iron with Stainless Steel Screen
• Bell Housing: Cast Bronze ASTM B584
• Fasteners: Stainless Steel, 300 Series
• Stem: Stainless Steel, 300 Series
• Plunger: Low Lead Cast Bronze ASTM B806
• Cartridge: Noryl Thermoplastic
• Elastomers: Buna Nitrile (FDA approved) and EPDM (FDA approved)
• Springs: Chrome Silicon, Epoxy Coated

Typical Installation:

Local codes shall govern installation requirements. Unless otherwise specified, 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 4-500XL3FY 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 Listed 1003; cUPC Listed; CSA Certified B356; NSF/ANSI/CAN 61 & 372

Features & Benefits:

• Balanced Piston Design: Provides smooth and responsive reaction to flow demand changes while protecting against inlet pressure fluctuations.
• Integral Venturi Technology: Patented design delivers best-in-class flow performance for high-capacity commercial and industrial applications.
• Removable Cartridge System: Enables maintenance and servicing without removing the valve body from the line, reducing downtime.
• Integral Y Strainer Protection: Epoxy coated ductile iron strainer with stainless steel screen protects downstream equipment from inlet debris.

FAQ

Q: What is the factory preset outlet pressure for the Wilkins 4-500XL3FY?

A: The Zurn 4-500XL3FY comes factory preset at 50 psi, with an adjustable range from 25 psi to 75 psi. A downstream pressure gauge must be used to verify correct pressure settings during adjustment.

Q: Can this valve be installed vertically?

A: Yes, the Model 500XL3F may be installed in any position—vertical or horizontal—with adequate clearance for servicing the strainer screen and valve cartridge.

Q: What is included with the optional low flow bypass kit?

A: The optional 1-500XL3BPK bypass kit includes all necessary fittings and is designed for use with 2-1/2" to 4" Model 500XL3F valves. The valve body is pre-drilled, tapped, and plugged to accept this kit.

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