A control valve adjusts the rate of fluid flow by changing the position of the valve plug or disc, which is controlled by an actuator. Control valves are used to keep a process variable as close to the target set point as possible. Flow rate, pressure, and temperature are common controller set points. Control valves can also be used to control product properties such as density, concentration, liquid level, and so on.

A control valve adjusts the rate of fluid flow by changing the position of the valve plug or disc, which is controlled by an actuator. Control valves are used to keep a process variable as close to the target set point as possible. Flow rate, pressure, and temperature are common controller set points. Control valves can also be used to control product properties such as density, concentration, liquid level, and so on.

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