Switching type electric actuators generally control the opening or closing of the valve. The valve is either in the fully open position or in the fully closed position. Such valves do not need to control the medium flow. Especially worth mentioning is the switch type electric execution. The device can be divided into a split structure and an integrated structure due to different structural forms. This must be explained when selecting the type, otherwise it will often occur in the field installation and the control system conflicts and other mismatches.

a) Split structure (commonly known as common type): The control unit is separated from the electric actuator. The electric actuator cannot realize the control of the valve separately. It is necessary to add the control unit to realize the control. Generally, the controller or control cabinet is used externally. Matching.

The disadvantage of this structure is that it is not easy to install the whole system, increase the wiring and installation cost, and is prone to failure. When the fault occurs, it is not easy to diagnose and repair, and the cost performance is not ideal.

b) Integrated structure (commonly referred to as integral type): The control unit is integrated with the electric actuator, which can be operated in real-time without external control unit. The remote control can be operated only by outputting relevant control information.

The advantage of this structure is that it facilitates the overall installation of the system, reduces wiring and installation costs, and is easy to diagnose and troubleshoot. However, traditional integrated structural products also have many imperfections, so intelligent electric actuators have been produced.