Tag: control valves

Control valves are subject to a number of common problems. This section is dedicated to an exploration of the more...

Control valves are supposed to deliver reliable, repeatable control of process fluid flow rate over a wide range of...

When control valves operate between fully open and fully shut, they serve much the same purpose in process systems as...

There are many process control applications in industry where it is desirable to have multiple control valves respond...

The reason why a pneumatic control valve’s stem position corresponds linearly to the amount of air pressure applied...

A limitation inherent to pneumatic valve actuators is the amount of air flow required to or from the actuator to cause...

Valve actuators provide force to move control valve trim. For precise positioning of a control valve, there must be a...

An important design parameter of a control valve is the position it will “fail” to if it loses motive power. For...