FAQ
| Pre-acting valve pre-acting system |
| DN100 USD390/set |
| DN150 USD450/set |
Pre-acting valve pre-acting system is an automatic sprinkler device developed in recent years. it combines fire detection and alarm technology with automatic sprinkler system and plays a dual role in protecting the object of protection.
working principle
In the absence of fire, the system is inflated in the system side pipeline, so the system has the characteristics of dry system, which can meet the needs of automatic sprinkler under high temperature and severe cold conditions.
In the event of a fire, the temperature and smoke fire detector installed in the protected area first sends out a fire alarm signal. after receiving the alarm signal, the fire alarm controller sends out an instruction signal to open the rain shower valve, and at this time fills the pipe network on the side of the system with water.
Convert the system to a wet system before the closed sprinkler is turned on.
At the same time, the water alarm bell alarm, pressure switch action, start acousto-optic alarm to show that the pipe network has been filled with water.
At this time, if the fire continues to develop, the closed sprinkler glass ball is broken, and the sprinkler extinguishes the fire.
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