Electric Actuator Valve Types

To protect the valve the torque sensing mechanism of the actuator turns off the electric motor when a safe torque level is exceeded.

Electric actuator valve types.

There are two main types of actuators one for each of the two main types of valves that require them. Pneumatic actuators provide for automatic or semi automatic valve operation. Electric actuators include electric motors and solenoid actuated valves. Linear electric valve actuators are used with gate globe diaphragm pinch and angle valves that feature a sliding stem that opens or closes the valve.

More information on rotary and linear motion valves can be found on engineering360 s valve types page. Typically a declutching mechanism and hand wheel are included so that the valve can be operated manually should a power failure occur. Electric motors can be used to open close and position a valve manually automatically or semi automatically. Position switches are utilized to indicate the open and closed position of the valve.

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. This power source can be electric pneumatic compressed air or hydraulic the flow of oil. The motor operates in both directions and drives the valve stem by means of gear couplings. Figure 2 typical electric motor valve actuator.