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

The Wilkins ZW4004SS-S is a Pressure-Tru™ automatic fire control pressure reducing valve with supervisory switch for sprinkler systems.

Key Specifications:

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

Other Related Variants:

• ZW4004SS-R: Pressure setting R
• ZW4004SS-T: Pressure setting T
• ZW4004SS-U: Pressure setting U

Materials:

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

Typical Installation:

The Zurn ZW4004SS-S 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; SS option - California State Fire Marshal Listed

Features & Benefits:

• Factory Set Pressure Profile: Non-field adjustable with pressure profile S setting ensures consistent pressure regulation under both flow and no-flow conditions.
• Integral Supervisory Switch: Built-in listed supervisory switch (3 A @ 125 VAC) with tamper resistant cover for valve position monitoring and fire system compliance.
• Tapped & Plugged Gauge Ports: Inlet and outlet gauge ports facilitate easy pressure monitoring and system diagnostics during installation and maintenance.
• Cast Bronze Construction: Durable ASTM B 584 cast bronze body with FDA approved Buna Nitrile and EPDM elastomers ensures long-lasting performance in fire protection systems.

FAQ

Q: What is the difference between pressure settings S, R, T, and U?

A: Each pressure setting (S, R, T, U) represents a different factory-set outlet pressure profile. Refer to the residual pressure charts to select the appropriate setting based on your inlet pressure and required downstream pressure for your sprinkler system design.

Q: Can the Wilkins ZW4004SS-S pressure setting be adjusted in the field?

A: No, the ZW4004SS-S is factory set and non-field adjustable. You must select the correct pressure profile setting (S, R, T, or U) at the time of ordering based on your system requirements.

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

A: The integral supervisory switch monitors valve position and provides a contact rating of 3 amps @ 125 VAC. It alerts the fire alarm system if the valve is closed or tampered with, ensuring fire protection system integrity and code compliance.

"Hydrate Everyone, Everywhere!" BottleFillingStations.com | Contact us