Explosion proof ball valve is a kind of valve (ball) rotating 90 ° around the channel axis, which is composed of rotary angular stroke electronic electric actuator and o-valve structure. It is a kind of rotary high-performance regulating or on-off valve. It receives the input and output of current signal or voltage signal from industrial automation control (DCS, PLC system) instruments, and can realize the control of fluid medium in process pipeline Proportional regulation or two position switch control, so as to achieve the automatic control of fluid medium flow, pressure, temperature, liquid level and other parameters.