Author: Wayne Perry, Senior Technical Director, Kaeser Compressors, Inc.
Whether you call them intermediate controls, flow controls, pressure/flow controls, demand expanders, or any other name, the proper application of them has always been a bit confusing to users. Some people will say that they should be used in nearly every application and some say there is no need for them in any application. The truth, as usual, is somewhere in the middle. Although this white paper refers to flow controllers, it applies to most all pressure/flow controls. We will use the generic term “flow controller” to refer to this class of control.
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The Proper Application of Pressure/Flow Controllers