The Wilkins ZW4004GSS-T is a Pressure-Tru™ automatic fire control pressure reducing valve designed for reliable pressure regulation in automatic sprinkler systems and standpipe applications under both flow and no-flow conditions.

Key Specifications:

• Size: 2 1/2 Inches
• Maximum Inlet Pressure: 225 psi
• Connection Type: Grooved AWWA C606
• Notable Certifications: UL, C-UL, NYC MEA
• Supervisory Switch Rating: 3A @ 125VAC

Other Related Variants:

• ZW4004GSS-Q: Pressure setting Q
• ZW4004GSS-R: Pressure setting R
• ZW4004GSS-S: Pressure setting S
• ZW4004GSS-U: Pressure setting U

Materials:

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

Typical Installation:

The Zurn ZW4004GSS-T 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:

• Factory Set Pressure Profile: Non-field adjustable pressure profile T ensures consistent performance and prevents unauthorized adjustments.
• Integral Supervisory Switch: Provides tamper indication with 3A @ 125 VAC rated switch and tamper-resistant cover for enhanced system monitoring.
• Dual Condition Regulation: Regulates pressure effectively under both flow and no-flow conditions for reliable fire protection system performance.
• Installation Convenience: Includes tapped and plugged ports for pressure gauges and open/close indicating feature for simplified system diagnostics.

FAQ

Q: What does the "T" pressure setting designation indicate for the Wilkins ZW4004GSS-T?

A: The "T" designation represents a specific factory-set pressure profile with a maximum inlet pressure of 225 psi. This setting is non-field adjustable to ensure consistent system performance and compliance with fire protection standards.

Q: Can this valve be installed in both horizontal and vertical orientations?

A: The Wilkins ZW4004GSS-T features grooved connections and is designed for installation in fire protection systems. Installation orientation should follow manufacturer specifications and local fire codes. Consult the installation manual for specific mounting requirements.

Q: How does the integral supervisory switch function?

A: The integral supervisory switch monitors valve position and provides an electrical signal (3A @ 125 VAC) to indicate tampering or unauthorized valve operation. The tamper-resistant cover helps prevent accidental or intentional interference with valve settings.

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