Actuation
Actuation refers to the equipment assembled to a valve or damper, which provides the power to open or close the device and report its current position.
The basic types of actuation are pneumatic, electric and electro-hydraulic. Actuators can be provided for linear motion, quarter turn or multi-turn rotation. Standard accessories include, but are not limited to, positioners, handwheels, limit switches, solenoids, and local indication. Any of which can be mounted to provide user with optimum control.