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The Wilkins ZW4004SS-U is a Pressure-Tru™ automatic fire control pressure reducing valve designed for sprinkler and standpipe systems, regulating pressure under both flow and no-flow conditions.

Key Specifications:

• Size: 2 1/2 Inches
• Maximum Inlet Pressure: 400 psi
• Valve Configuration: Angle type (standard)
• Notable Certifications: UL Listed, C-UL Listed, NYC MEA 325-06-E, California State Fire Marshal
• End Connections: FNPT ANSI B1.20.1

Other Related Variants:

• ZW4004SS-R: Pressure setting R variant
• ZW4004SS-S: Pressure setting S variant
• ZW4004SS-T: Pressure setting T variant

Materials:

• Cast Bronze ASTM B 584 (castings/internals)
• Buna Nitrile FDA approved (elastomers)
• EPDM FDA approved (elastomers)

Typical Installation:

The Zurn ZW4004SS-U is listed as a floor control valve, an indicating valve, and a check valve in automatic sprinkler systems as well as a standpipe valve for CLASS I and CLASS III systems.

Standards Compliance:

UL Listed; C-UL Listed; NYC MEA 325-06-E; City of Los Angeles Approved; California State Fire Marshal Listed

Features & Benefits:

• Integral Supervisory Switch: Factory-installed supervisory switch (3 A @ 125 VAC) for valve position monitoring with tamper-resistant cover.
• Factory Set Non-Adjustable: Factory set pressure profile U ensures consistent performance and eliminates field adjustment errors.
• Dual Condition Regulation: Regulates pressure effectively under both flow and no-flow conditions for reliable system operation.
• Multiple Certifications: UL & C-UL Listed, NYC MEA, and California State Fire Marshal approved for comprehensive code compliance.

FAQ

Q: What pressure setting does the ZW4004SS-U have?

A: The Wilkins ZW4004SS-U features factory set pressure profile "U" which is non-field adjustable and provides a maximum inlet pressure rating of 200 psi to maintain maximum outlet pressure of 175 psi.

Q: Can the supervisory switch be used for system monitoring?

A: Yes, the integral supervisory switch is rated for 3 amps at 125 VAC and monitors valve position, featuring a tamper-resistant cover for security.

Q: What types of fire protection systems is this valve approved for?

A: The Zurn ZW4004SS-U is listed for use in automatic sprinkler systems as a floor control valve, indicating valve, and check valve, as well as a standpipe valve for CLASS I and CLASS III systems.

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