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.