Pre-action alarm valve is a combination of fire detection and alarm technology and automatic sprinkler system, which has double protective effect on the object of protection.
It is usually installed in places where it is necessary to use water to extinguish fire but it is not allowed to spray water for non-fire causes.Such as storage rare treasures of the library, archives, museums, valuables storage room and so on.
Preaction system's system-side piping time, filled with low-pressure compressed air, featuring a dry system that can meet the needs of installing automatic sprinkler systems in cold places
