NOTICE: Product images may vary from the actual item due to differences in size or configuration options.

The Wilkins 4-500XL3FHR is a flanged water pressure reducing valve designed for commercial plumbing and industrial water systems, featuring a balanced piston design and integral venturi for superior flow performance.

Key Specifications:

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

Other Related Variants:

• 4-500XL3F: Standard version without HR option
• 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)
• Noryl Thermoplastic Cartridge
• Buna Nitrile Elastomers (FDA approved)
• EPDM Elastomers (FDA approved)
• Epoxy Coated Chrome Silicon Springs

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 Model 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:

• High Flow Capacity: Patented integral venturi design provides best-in-class flow performance for commercial and industrial applications.
• Balanced Piston Design: Ensures smooth and responsive reaction to system flow demand changes while providing protection from inlet pressure fluctuations.
• HR Spring Range: The Zurn 4-500XL3FHR features an extended spring range of 60-125 psi, factory set at 85 psi for systems requiring higher outlet pressure adjustment.
• Easy Maintenance: Removable cartridge and corrosion resistant materials allow for service without removing the body from the line; includes tapped and plugged openings for gauge and optional low flow bypass kit.

FAQ

Q: What is the difference between the standard 4-500XL3F and the Wilkins 4-500XL3FHR?

A: The HR option features an extended spring range of 60-125 psi (factory set at 85 psi) compared to the standard version's 15-75 psi range (factory set at 50 psi), making it suitable for applications requiring higher outlet pressures.

Q: Can the Zurn 4-500XL3FHR be installed vertically?

A: Yes, the valve may be installed in any orientation (vertical, horizontal, or other). Ensure sufficient side clearance is provided for testing and maintenance access.

Q: What accessories are available for this valve?

A: Available accessories include repair kits, pressure gauges, the 1-500XL3HRBPK integral low flow bypass kit (fittings included), and the 1-500XL3DUHRBP bypass valve (fittings not included, for parallel installation). The optional Y suffix adds a flanged Y strainer, and the G suffix includes a gauge.

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