Drive Systems

Drive Systems

Operator systems are the operational element for valves and ensure the actual opening, closing or control of the flow in a pipeline. A rough distinction is made between manual and automatic actuators, and between linear and quarter-turn actuators.

A linear actuator provides a straight-line motion in which a spindle is moved in a straight path. This actuator is applicable to valves that require linear motion such as gate, globe or pinch valves.

A quarter turn actuator provides a rotary motion in which a spindle is moved around its axis, usually at 90 degrees.This actuator is applicable to valves requiring quarter turn motion such as ball valves, butterfly valves or plug valves. The most common versions of this type of actuator are the rack & pinion actuator andskotch yoke actuator. Examples of manual actuators are handwheels, sprockets and square cams.

Examples of automatic drives are pneumatic, electric and hydraulic drives.Hanwel can supply any type of drive. We are happy to advise on the best drive for your application.