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The Wilkins ZW4000G-R is a UL Listed Pressure-Tru™ fire hose pressure reducing standpipe valve designed for CLASS I and CLASS III systems, regulating pressure under both flow and no-flow conditions.

Key Specifications:

• Size: 2 1/2 Inches
• Maximum Inlet Pressure: 290 psi
• Notable Certifications: UL Listed, C-UL Listed
• Inlet Connection: Grooved AWWA C606
• Outlet Connection: Male Hose NFPA 1963

Other Related Variants:

• ZW4000G-P: 360 psi max inlet pressure version
• ZW4000G-Q: 310 psi max inlet pressure version
• ZW4000G-S: 250 psi max inlet pressure version
• ZW4000G-T: 225 psi max inlet pressure version
• ZW4000G-U: 200 psi max inlet pressure version

Materials:

• Cast Bronze ASTM B 584
• Buna Nitrile Elastomers (FDA approved)
• EPDM Elastomers (FDA approved)

Typical Installation:

The Zurn ZW4000G-R is listed as a standpipe valve for individual hose stations in CLASS I and CLASS III fire protection systems where pressure regulation is required under both flow and no-flow conditions.

Standards Compliance:

UL Listed; C-UL Listed; NYC MEA 325-06-E; City of Los Angeles Approved

Features & Benefits:

• Dual Condition Pressure Regulation: Regulates pressure under both flow and no-flow conditions for reliable fire protection system performance.
• High-Quality Construction: Cast bronze body with FDA-approved elastomers ensures durability and long-term reliability in demanding fire protection applications.
• Comprehensive Listings: UL and C-UL Listed with NYC and Los Angeles approvals provide confidence in code compliance and safety.
• Pressure Monitoring Ready: Factory tapped and plugged inlet and outlet ports facilitate easy pressure gauge installation for system monitoring and testing.

FAQ

Q: What is the difference between the various ZW4000G bonnet types?

A: Each bonnet type (R, P, Q, S, T, U) is designed for different maximum inlet pressures, ranging from 200 psi to 290 psi, allowing you to select the appropriate valve based on your system's specific pressure requirements.

Q: Can the Wilkins ZW4000G-R be used in both CLASS I and CLASS III systems?

A: Yes, the Zurn ZW4000G-R is UL Listed as a standpipe valve for individual hose stations in both CLASS I (professional firefighter use) and CLASS III (trained building occupants) fire protection systems.

Q: What type of connection does the ZW4000G-R have?

A: The ZW4000G-R features a grooved inlet connection conforming to AWWA C606 standards and a male hose outlet conforming to NFPA 1963 standards.

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