PREACTION-PAC is a Factory Mutual (FM) Approved, fully integrated preaction fire suppression assembly. It includes a preaction valve, compressor, and control panel providing one complete zone of preaction water sprinkler fire protection. All components are contained in two steel enclosures assembled one above the other. The system pressure gauges and the required manual release handle are mounted on the front of the lower enclosure. The system detection and control panel is mounted behind a door in the upper enclosure with a clear poly-carbonate window allowing visual access to the system indicators. Lockable latches on both doors permit authorized access to all system components. Both enclosures are finished in powder-coat red paint. Gasketing provides sealing of the enclosure doors. Knockouts permit easy attachment of external electrical conduits.


  • FM Approved
  • CSFM Listing No. 7080-2143:0100
  • FDNY Certificate of Approval # 6148
  • Fully factory assembled, programmed and tested
  • No field assembly required
  • Includes detection/control panel and preaction valve
  • Just connect water supply, drain, and field electrical devices
  • Attractive and rugged metal enclosure
  • Easy-to-see gauges on front of enclosure
  • Easy access to manual release valve
  • Installation drawings available
  • Low and upper water inlet connections
  • Easy-to-follow instructions on enclosure front
  • Space for required spare sprinkler heads and wrench
  • Separate mechanical and electrical enclosures
  • 1-1/2″ thru 4″ valve options
  • Addressable or conventional control panel options


  • Saves assembly and programming time
  • Quicker commissioning – just place, connect and it’s ready
  • Finished appearance allows placement in or near hazard
  • Easy inspection and maintenance
  • Rapid access to manual release handle
  • Up to 636 addressable points on one system
  • Reliable, dependable protection that functions as designed
  • Expert field and in-house technical support

PREACTION-PAC Approvals & Listings

PREACTION-PAC is approved by Factory Mutual (FM), the Fire Department of the City of New York (FDNY), and listed with the California State Fire Marshall (CSFM). Below are links to each of these documents in PDF format.

PREACTION-PAC Sales Literature

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Did You Know?
  • If you have a dry standpipe in your structure, can you tell if it’s intact and ready for fire department use? If it’s not, the risk is high.  Be sure – a UNITED Fire Systems STANDPIPE-PAC system will alert you if someone accidentally leaves a valve open or even disassembles a portion of the standpipe inadvertently.