The advantage of the electric actuator to control the valve is that the valve can be controlled remotely. Operators can sit in the control room to control the production process without the need for manual operations on site. If it is used to control the liquid level, flow, pressure and other parameters of the process system, the analog quantity of 4-20mA or 0-10V can be used as the control signal. If multiple electric actuators are needed in the control process, the various actuators can be connected through the digital communication system, which can greatly reduce the installation cost.
