The FM Approved UNITED Fire Systems PREACTION-PAC™ is a fully assembled preaction fire suppression system, including preaction valve, trim, and optional control panel, providing one complete zone of preaction water sprinkler fire protection. All components are contained in two (2) red powder-coated steel enclosures assembled one above the other. The system pressure gauges are mounted on the front of the valve enclosure. The system detection and control panel is mounted behind a door on the electrical enclosure with a clear polycarbonate window allowing examination of the system visual indicators. Lockable latches on both doors permit restricted access to connections and components. A manual release valve is located behind a non-locking door on the valve enclosure. Gasketing provides sealing of the enclosure doors. Knockouts permit easy attachment of external electrical raceways.

To learn more about the PREACTION-PAC™ fire suppression assembly, give us a call at 908.688.0300 or contact us online.


  • FM Approved
  • CSFM Listing No. 7080-2143:0100
  • FDNY Certificate of Approval # 6148
  • Includes preaction valve with optional control panel and supervisory pressure source
  • Fully factory assembled, programmed, and tested
  • No field assembly required
  • Just connect water supply, drain, sprinkler piping, power, and electrical devices
  • Lower left or right side water inlet and drain connections
  • Attractive, rugged, powder-coated metal enclosures
  • Separate, lockable valve and electrical enclosures
  • Easy-to-see pressure gauges on enclosure front
  • Manual actuation valve behind separate non-locking door
  • Space for required spare sprinkler heads and wrench
  • Easy-to-follow instructions on enclosure front
  • 1-1/2 through 6 inch valve options
  • Addressable or conventional control panel options


  • Saves assembly, programming, and installation time
  • Installation drawings available
  • Quicker commissioning – just place, connect, and it’s ready
  • Easy inspection and maintenance
  • Finished appearance allows placement in or near protected space
  • Rapid access to manual release handle without a key
  • Reliable, dependable protection that functions as designed
  • Expert in-house field and technical support


Contact UNITED Fire Systems Today

Give us a call at 908.688.0300 or contact us online to request more information about the PREACTION-PAC™ system. 


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Engineering Specifications & Drawings +-

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Manuals +-

Sales Literature +-

Info Sheets +-

Technical Notes & Important Info +-

Certifications And Approvals +-

Warranty Information +-

Did You Know?
  • Your wet-pipe sprinkler system may not be as filled with water as you expect it to be. A bubble of air may migrate to the highest point in the system, creating a very vulnerable location for internal pipe corrosion. That’s why NFPA 13 now requires that all new wet sprinkler systems be fitted with an air vent at the system’s highest point. This is a good investment for both new and existing systems. The UNITED Fire Systems Model AR-1 automatic air vent device is Factory Mutual (FM) Approved for just this function. See here for more information, and take action to prevent damaging corrosion.