... Range Z are used for the control of globe valve, gate valve, throttle valve, water gate and etc. And SND actuators of Range ... position, the actuator can carry out functions of valve opening, valve closing and stop via black knob.4.2.2 REMOTE CONTROLWhen the ... position, the actuator can carry out functions of valve opening, valve closing and stop via terminals.Power supply of Remote Control is DC ...