Transcription of Part 1 Control Valve Actuator Options - …
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Part 1 Control Valve Actuator Options - …
George Ritz, Contributing EditorThis article is the first in a two-part se-ries examining the state of the art in con-trol Valve actuators and their current ap-plication guidelines in the process indus-tries. Part I deals with the mechanical as-pects of Valve Actuator Options . Part II,in next months issue of Control , willcover the benefits of using the latest gen-eration of smart, digitally controlled the past several years, Valve actuators have re-ceived relatively little attention while process Control specialists concentrated on Control -lers, sensors, and other components of thecontrol loop.
Involve stiction (valve stem friction), Actuator stiffness, stroking speed, plug-head buffeting, hysteresis, and other factors. Most of these problem areas,
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