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  2. Valve actuator - Wikipedia

    en.wikipedia.org/wiki/Valve_actuator

    Electric actuator (blue cylinder) on a valve in a power plant. A black handwheel is visible on the actuator, which allows manual positioning of the valve. The blue valve body is visible in-line with the pipe. The valve actuator opens or closes the butterfly disc of the valve based on electrical signals sent to the actuator.

  3. Rotary actuator - Wikipedia

    en.wikipedia.org/wiki/Rotary_actuator

    Electric rotary valve actuator controlling a butterfly valve. A rotary actuator is an actuator that produces a rotary motion or torque.. The simplest actuator is purely mechanical, where linear motion in one direction gives rise to rotation.

  4. Butterfly valve - Wikipedia

    en.wikipedia.org/wiki/Butterfly_valve

    Butterfly valve with actuator electric valve - An electrically actuated butterfly valve is a quarter-turn valve controlled by an electric motor. It offers fast and precise flow regulation, remote operation, and versatility for various applications.

  5. Control valve - Wikipedia

    en.wikipedia.org/wiki/Control_valve

    Electric valve: Actuated by an electric motor; A wide variety of valve types and control operation exist. However, there are two main forms of action, the sliding stem and the rotary. The most common and versatile types of control valves are sliding-stem globe, V-notch ball, butterfly and angle types.

  6. Rotork - Wikipedia

    en.wikipedia.org/wiki/Rotork

    Protech Instruments & Systems, an instrumentation company, was purchased in 1985 to expedite the development of Pakscan, a digital bus control system for actuators. [6] In 1999 it bought Fluid System Srl, an Italian actuator business, in 2000 it bought Skilmatic in Leeds [6] and in 2002 it acquired Jordan Controls, a United States actuator ...

  7. Linear actuator - Wikipedia

    en.wikipedia.org/wiki/Linear_actuator

    Most current actuators are built for high speed, high force, or a compromise between the two. When considering an actuator for a particular application, the most important specifications are typically travel, speed, force, accuracy, and lifetime. Most varieties are mounted on dampers or butterfly valves. [3] [4]

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