Pre Action

Preaction Systems

Preaction Systems are most frequently used to protect against accidental water discharge. Common installations include computer rooms, process control rooms, libraries, and freezers.

The Single-Interlocked Preaction System shown 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. Activation of both the detection system and a sprinkler will allow water to flow into the hazard being protected.

Double-Interlocked Preaction 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.

Non-Interlocked Preaction systems will allow water flow into the system on either activation of the detection system or the activation of a head.

Service 1st Fire Protection can maintain your preaction sprinkler system completely. From inspections to complete replacement of these complex systems... our qualified technicians can provide the solutions you need with the quality service you deserve. Call to schedule an appointment today. 623-582-3369