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

The Wilkins ZW4004SS-R is a 2-1/2" angle-type automatic fire control pressure reducing valve with an integral supervisory switch, designed for reliable pressure regulation in sprinkler systems.

Key Specifications:

• Size: 2 1/2 Inches
• Maximum Inlet Pressure: 400 psi
• Factory Set Pressure Profile: Type R
• Notable Certifications: UL Listed, C-UL Listed, NYC MEA 325-06-E
• End Connections: FNPT ANSI B1.20.1

Other Related Variants:

• ZW4004SS-S: Factory set pressure profile S
• ZW4004SS-T: Factory set pressure profile T
• ZW4004SS-U: Factory set pressure profile U

Materials:

• Cast bronze body (ASTM B 584)
• Buna Nitrile elastomers (FDA approved)
• EPDM elastomers (FDA approved)

Typical Installation:

The Wilkins ZW4004SS-R 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:

• Integrated Supervisory Switch: Includes integral listed supervisory switch (3 A @ 125 VAC) with tamper-resistant cover for valve position monitoring and system security.
• Reliable Pressure Regulation: Regulates pressure under both flow and no-flow conditions, ensuring consistent system performance in fire protection applications.
• Factory Set & Non-Adjustable: Factory set pressure profile R eliminates field adjustment errors and ensures code-compliant installation.
• Durable Bronze Construction: Cast bronze body (ASTM B 584) with FDA-approved elastomers provides long-lasting durability and reliability in demanding fire control systems.

FAQ

Q: What is the difference between the ZW4004SS-R and other pressure profile settings?

A: The ZW4004SS-R features factory set pressure profile R. Other variants include settings S, T, and U, each designed for different inlet and outlet pressure requirements. Refer to the residual pressure charts to select the appropriate setting for your system's GPM demand and inlet pressure.

Q: Can the Zurn ZW4004SS-R be used in both sprinkler and standpipe systems?

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

Q: What is the purpose of the integral supervisory switch on this valve?

A: The integral supervisory switch monitors valve position and provides a signal (3 A @ 125 VAC) to fire alarm control panels, alerting operators if the valve is tampered with or improperly closed, ensuring system readiness.

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