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BASIC GUIDELINES FOR CONTROL VALVE SELECTION AND SIZING

Control Valve Sizing & Selection

Determine what the valve is supposed to do.Is this valve used for tight control or is”loose”control acceptable. (For instance, are you trying to control a flow within a very tight margin across a broad range of process conditions or are you simply throttling a charge flow down as it approaches setpoint to avoid overshoot). The requirements for one situation are quite different from the other.