Part-turn electric valve actuators are used for valves with part-turn of the valve disc, such as ball valves, butterfly valves, plug valves etc.
Part-turn explosion-proof electric valve actuators are divided into two series of product QB.
Torque range of the QB series is: 125~4000N.m (50~2000N.m for the adjustable type); (4000~16000N.m for the modulating type): these two series of products are divided into ordinary type and modulating type according to different electrical control methods. The explosion-proof electric valve actuators has built-in basic control units such as stroke and torque, and a control box is required to realize the on-site and remote control operation of the valve. The performance indicators meet the requirements of GB/T24922-2010 "Technical Conditions for Explosion-proof Electric Valve Actuators."
In addition to the built-in basic control units such as stroke and torque, the integral flameproof electric valve actuators is also equipped with control components such as control modules and AC contactors. It can directly connect to the power supply to realize the on-site operation of the valve, and can directly receive the switch signal output by the DCS control system to realize the remote control operation of the valve. The performance indicators meet the requirements of GB/T 24922-2010 "Technical Conditions for Flameproof Electric Valve Actuators ". The flameproof regulating electric valve actuators is suitable for the closed-loop control system of dry industrial processes, and can accurately position the valve by receiving the 4~40mA current signal sent by the control system. The performance indicators meet the requirements of GB/T24922-2010 "Technical Conditions for Flameproof Electric Valve Actuator" and JB/T8219-2016 "Ordinary and Intelligent Electric Actuators for Industrial Process Control Systems".
