安装在机械排烟系统个支管端部，平时呈关闭状态，并满足漏风量，火灾后需要排烟时手动或电动打开起排烟作用的阀门。
该法也适用于防火调节阀和排烟阀的性能试验。
The method is also suitable for fire -regulating damper and smoke -discharging damper.
本实用新型涉及到一种多功能防排烟阀装置，适用于消防、排烟的场 合。
The utility model relates to a multifunctional smoke emission valve which is suitable for the occasions of fire-fighting and smoke evacuation.
目前，主要产品有应急疏散指示灯、应急照明灯、应急电源等和各类防排烟阀。
At present, our products mainly refer to emergency evacuation indicating lamps, emergency lamps, emergency power supplies and various smoke control valves.
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