A Deluge Fire Suppression System is a sprinkler system with an empty pipe system, meaning there is no water stored in the piping network. The water is instead stored behind a control valve. A typical Deluge system will have a control valve, a dedicated water supply, and a sprinkler operated by detection system.
A Deluge system is directly connected to a dedicated water supply and when the system is activated, the Deluge Valve releases water to these open sprinkler heads.
These systems are typically used in high-hazard areas where fire may spread rapidly. Unlike traditional wet sprinkler systems, the sprinkler heads on a Deluge system are always left in an open position to allow for large amount of water to be dumped on a hazard.