It is claimed that the majority of control valves throughout the world have not been correctly sized and that large numbers operate on manual mode. Whether this is true or not is difficult to establish but we do know that the method of sizing and selecting a control valve for a specific application is generally not well understood. Although there are many factors that need to be taken into account the subject is not difficult to understand if dealt with in a logical manner. We also find that many maintenance problems result from people treating the symptoms of a problem rather than tackling the true cause – a basic understanding of the principles is all that is usually needed to solve the problem for good.
This course is designed to provide participants with a detailed and an up-to-date overview of control valve sizing, selection, operation, testing, maintenance and troubleshooting. It covers the valve characteristics and trim selection; the process of control valve sizing; the control valve accessories such as auxiliary hand-wheels, pressure regulators, position transmitters, volume booster, limit switches and solenoid valves; and the process of control valve selection.
Further, the course will also discuss the control valve performance which includes process variability, actuator-positioner design, valve type, sizing, response and characterization; the common valve problems and its solutions; the use of system approach to prevent the occurrences of the problems; the different operational issues of control valves and actuators; the various control valve failures and their potential causes; the field communications and its importance; the practical application on control valves and actuators; the development, features and functions of smart valves and positioners; the diagnostic testing in valves; and the fire safe valves.