The series of BYS electric actuator is used for control rotation valve between 0% to 270% and other similar products, such as butterfly valve, ball valve, ventilation door, baffle valve, plug valve and louver valve etc.It can be used extensively for oil, chemical industry, water handles, ship, papermaking, power station, heating power, building automation and control, light industry and other industries. It uses ac power source of 380V/220V/110V as power supply ,4-20mA current signal or 0-10V DC voltage signal as control signal, to drive valve to required position, and achieve its automation control, Its biggest output torque is 60Nm.