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Valve Actuator Selection Guide

By Gilbert Welsford Jr. |

Information provided here can help guide the selection of valve actuators that are best suited to the demands of a particular chemical processing application Actuators are machines used to control the position of a valve remotely and automatically. They are attached to the control mechanism of a valve to replace the manual lever or handle. Valve actuators are essential components in flow-control systems. The primary function of an actuator is to control the position of a valve. The actuator can close a valve, open a valve, move a valve to a specific position, hold the valve in place, prevent valve leakage by creating a tight shut-off, operate in failure mode, modulate flow through a valve and so on. In industrial applications, numerous types of actuators are available, and they can be connected to a variety of valve types. Selecting the proper actuator for a given application is a task that must be considered seriously. Several factors influence the kind of actuator that is suitable for a process. This article is an all-in-one actuator guide that covers the essential function of actuators, outlines actuator types, and describes important considerations for valve-actuator selection for the particulars of an application. Actuator…
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