压缩机气阀用来控制气体及时吸入和排出气缸的重要部件。

活塞式压缩机上的气阀都是自动阀，即气阀的启闭不是用强制机构而是靠阀片两侧的压力差来实现。常用的自动阀有环状阀、网状阀、条状阀、舌簧阀、碟状阀和直流阀、菌形阀等，每种气阀又分为吸气阀和排气阀。

The compressor gas valve is an important component used to control the timely intake and discharge of gas in the cylinder.The gas valves on piston compressors are all automatic valves, meaning that the opening and closing of the valves is achieved not by a forced mechanism but by the pressure difference on both sides of the valve plate. Common types of automatic valves include ring valves, mesh valves, strip valves, reed valves, disc valves, and direct current valves, among others. Each type of gas valve is further divided into intake valves and exhaust valves.