A deluge fire protection system has unpressurized dry piping and open sprinkler heads. The system is directly connected to a water supply and when the system is activated manually/automatically, a deluge valve will release the water to all the open sprinkler heads. The valve is opened when activated by a heat, smoke detection or pilot line automatic sprinkler system
The main purposes behind using deluge systems are any one or combination of the following:
A deluge system comprises of three main components: deluge spray nozzles and lines, deluge valve set, and deluge system water supply. A fire detection (Smoke/Heat/Flame Detector/Automatic sprinkler) system detects the fire and sends the signal to the fire alarm panel to activate the deluge valve. Immediately the deluge valve opens which is connected to a water supply. Water flows into the piping system and starts discharging from all nozzles and open sprinklers. After use, the deluge valve can be easily reset to normal operating condition by draining the water remaining inside the pipe and valve body
According to the method of release, Deluge systems are classified into three categories:
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