FLUID-ACTUATED FLOW CONTROL VALVES

Aspects of the invention are directed to an apparatus for controlling a flow of a fluid therethrough while the apparatus is connected to a source of control fluid. The apparatus comprises an input, a valve seat, a diaphragm, an output, and a diaphragm control space. The diaphragm control space is pa...

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Format: Patent
Sprache:eng
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Zusammenfassung:Aspects of the invention are directed to an apparatus for controlling a flow of a fluid therethrough while the apparatus is connected to a source of control fluid. The apparatus comprises an input, a valve seat, a diaphragm, an output, and a diaphragm control space. The diaphragm control space is partially defined by the diaphragm, and is operative to receive control fluid from the source of control fluid. Moreover, a deflection of the diaphragm in relation to the valve seat is responsive to a pressure of the control fluid in the diaphragm control space. Lastly, the deflection of the diaphragm in relation to the valve seat is operative to control a fluidic flow resistance between the input and the output.