Part 1 Control Valve Actuator Options - iceweb.com.au

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. This is borne out by theControl Valve Actuator OptionsToday s Actuators Offer Imposed Performance With Lower Life-Cycle Challenge Is Choosing the Right One for the 1unglamorous nickname pig iron as-signed to the Actuator / Control Valve the onset of the smart- Valve genera-tion, it suddenly appears that the controlva

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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