The dry alarm valve is an important component of the dry automatic water spray system. The dry automatic sprinkler system is designed to meet the needs of installing automatic sprinkler systems in cold and high-temperature places.
It is a closed system which developed on the basis of the wet system. The dry system adopts a closed fire sprinkler. Due to in the pipe network at the system side is the pressure gas (compressed air or nitrogen gas), so the phenomenon of the pressurized water frozen or evaporation when the wet system is used can be avoided.