安全逆止阀

安全逆止阀主要用于介质为空气或压缩空气的风机出中中，防止介质逆流进入风机内并同时可起安全泄压作用。

Safety backpressure valves are mainly used in the outlet of fan-engine for air and compress air ,the eauipment will prevent the medium reflow into the fan-engine and have the function of discharging medium safety.