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The Wilkins ZW4004GSS-R is a Pressure-Tru™ automatic fire control pressure reducing valve with grooved connections and integral supervisory switch, designed for fire sprinkler and standpipe systems.

Key Specifications:

• Size: 2 1/2 Inches
• Maximum Working Pressure: 400 psi inlet
• Notable Certifications: UL, C-UL, NYC MEA
• Connection Type: Grooved AWWA C606
• Supervisory Switch Rating: 3 A @ 125 VAC

Other Related Variants:

• ZW4004GSS-Q: Pressure setting Q variant
• ZW4004GSS-S: Pressure setting S variant
• ZW4004GSS-T: Pressure setting T variant
• ZW4004GSS-U: Pressure setting U variant

Materials:

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

Typical Installation:

The Zurn ZW4004GSS-R is installed 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 where pressure regulation under both flow and no-flow conditions is required.

Standards Compliance:

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

Features & Benefits:

• Automatic Pressure Regulation: Maintains consistent downstream pressure under both flow and no-flow conditions for optimal fire protection system performance.
• Integral Supervisory Switch: Built-in tamper-resistant switch with 3 A @ 125 VAC rating provides valve position monitoring for enhanced system security.
• Grooved Connections: AWWA C606 grooved inlet and outlet connections enable faster installation and maintenance compared to threaded alternatives.
• Factory Set & Non-Field Adjustable: Pre-calibrated pressure profile R setting ensures reliable performance and prevents unauthorized tampering with system pressure settings.

FAQ

Q: What pressure setting does the ZW4004GSS-R have and can it be adjusted in the field?

A: The Wilkins ZW4004GSS-R comes factory set with pressure profile R (maximum inlet pressure 290 psi) and is non-field adjustable to maintain system integrity and prevent unauthorized modifications.

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

A: The integral supervisory switch monitors valve position and alerts building management systems if the valve is tampered with or closed, ensuring fire protection system reliability. The switch is rated for 3 amps at 125 VAC and features a tamper-resistant cover.

Q: Can this valve be used in both commercial fire sprinkler and standpipe applications?

A: Yes, the Zurn ZW4004GSS-R is UL and C-UL listed as a floor control valve, indicating valve, and check valve for automatic sprinkler systems, as well as a standpipe valve for CLASS I and CLASS III systems, making it suitable for multiple fire protection applications.

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