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Title: TROUBLESHOOTING CONTROL VALVES: A SYSTEMATIC PROBLEM SOLVING APPROACH
Author: JIM GREEN
Source: 2019 Western Gas Measurement Short Course
Year Published: 2019
Abstract: Troubleshooting Control Valves is a very broad subject to cover given the vast array of Valves, Actuators, and Control Instrumentation available in the market today. We have Ball Valves, Globe Valves, Plug Valves, Butterfly Valves, and Segmented Ball Valves just to name a few. All of these Control Valves can be outfitted with various types of Valve Trim, Actuators, and Control Instrumentation to characterize and fine-tune the performance of the valve to achieve a desired control effect. The possible problems that can arise can be as simple as an external leak to a total loss of Process Control. Technicians are tasked to fix mechanical, electronic, and pneumatic issues as well as be qualified to perform complex tuning of the Control Valve System to achieve solid Process Control under many varying conditions. With all these variations, the job of the Control Valve Technician is a challenging one that requires a person to be adept in Mechanics, Pneumatics, Instrumentation, and Electronics. Even if a Technician is qualified in all of these areas, their success in troubleshooting control valves requires them to be knowledgeable in two critical areas:

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