Electric Actuator Valve Types

They are rotary and linear.

Electric actuator valve types.

Selection of the best actuator type for any application is dependent on many factors including. To protect the valve the torque sensing mechanism of the actuator turns off the electric motor when a safe torque level is exceeded. More information on rotary and linear motion valves can be found on engineering360 s valve types page. Linear electric valve actuators are well suited for operating in tight tolerances.

There are two main types of actuators one for each of the two main types of valves that require them. The motor operates in both directions and drives the valve stem by means of gear couplings. This power source can be electric pneumatic compressed air or hydraulic the flow of oil. Electric actuators include electric motors and solenoid actuated valves.

Typically a declutching mechanism and hand wheel are included so that the valve can be operated manually should a power failure occur. 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. Figure 2 typical electric motor valve actuator. Pneumatic actuators provide for automatic or semi automatic valve operation.