Electric Actuator Valve Types

They work by translating an instrument air signal into valve stem motion by air pressure acting on a diaphragm or piston connected to the stem.

Electric actuator valve types.

There are two main types of actuators one for each of the two main types of valves that require them. They are rotary and linear. Typically a declutching mechanism and hand wheel are included so that the valve can be operated manually should a power failure occur. Position switches are utilized to indicate the open and closed position of the valve.

Electric actuators include electric motors and solenoid actuated valves. More information on rotary and linear motion valves can be found on engineering360 s valve types page. This power source can be electric pneumatic compressed air or hydraulic the flow of oil. Linear electric valve actuators are well suited for operating in tight tolerances.

Electric motors can be used to open close and position a valve manually automatically or semi automatically. Selection of the best actuator type for any application is dependent on many factors including. Figure 2 typical electric motor valve actuator. The motor operates in both directions and drives the valve stem by means of gear couplings.