Valve Actuators

Remote operation of a valve is simply managed through one of the four categories of actuators.

 DESCRIBE the operation of the following categories of actuators:

a. Pneumatic

b. Hydraulic

c. Solenoid

d. Electric motor

Actuators

Through themselves, valves cannot control a process. Manual valves need an operator to position them to control a process variable. Valves that must be operated remotely and automatically need special devices to move them. These devices are known as actuators. Actuators might be hydraulic, pneumatic, or electric solenoids or motors.