WET PIPE SYSTEMS: The wet pipe system is the simplest and most common type of fire sprinkler installation. Wet systems are frequently installed in factories, warehouses, and office buildings where the potential for freezing does not exist. A wet pipe system riser can employ a check valve along with an electric water flow indicator and electric alarm, or for installations requiring a mechanical alarm, we offer an alarm check valve and water motor alarm.

DRY PIPE SYSTEMS: Dry Pipe Systems are frequently installed in areas subject to freezing temperatures, such as unheated storage areas and loading docks. System operation is similar to Wet Pipe Systems, except that the system piping is charged with compressed air or nitrogen instead of water. The entire system is designed to permit quick, easy maintenance and constructed so it rarely needs any. All components are fast acting, rugged, and durable enough to provide long years of dependable operation.

PREACTION SYSTEMS (SINGLE-INTERLOCKED): Preaction Systems are most frequently used to protect against accidental water discharge, or to speed the action of large dry pipe systems. Common installations include computer rooms, process control rooms, libraries, and freezers. Often, a Preaction System is specified to replace a gas- based extinguishing system. The Single-Interlocked Preaction System requires activation of the detection system before allowing water to flow into the closed sprinkler system piping. This helps prevent unwanted water flow when a pipe or sprinkler is accidentally broken.

PREACTION SYSTEMS (DOUBLE-INTERLOCKED): Similar to the Single-Interlocked Preaction Systems, Double Interlocked Systems require activation of both the detection system and a sprinkler before allowing water to flow into the sprinkler system piping. This configuration provides even more protection against accidental discharge of water. Installations include computer rooms, process control rooms, libraries, and freezers.

DELUGE SYSTEMS: Deluge Systems provide fast and total wetting of protected areas, and are frequently used in extra-hazard risks such as aircraft hangars, power generating stations, and petrochemical facilities. For dependable, hazard-specific operation, Deluge Systems can include a manual, pneumatic, hydraulic, or any type of electric detection/release system.

FOAM/WATER SYSTEMS: Any system—Wet, Dry, Deluge, or Preaction can be adapted to include the injection of AFFF foam concentrate in order to combat high risks such as flammable fuels and alcohol. The primary components added to the sprinkler system riser include bladder tanks to hold the foam concentrate, concentrate control valves to isolate the sprinkler system from the concentrate until activation, and proportioners (controllers) for mixing the appropriate amount of foam concentrate with the system supply water.