| 摘要 |
<p>In order to provide fast response to control signals for modifying high pressure fluid flow paths such as air at 80 psi through large orifices by use of thin flexible diaphragms, a movable control element is positioned with two ends disposed between two thin impervious flexible diaphragms which can be deflected to move the element in opposite directions. Pressure chambers acting on each diaphragm cause the control element to move as a function of the differential pressure. In one pressure chamber positioned in alignment with one end of said control element is a valve nozzle through which the controlled fluid flows. Thus the control element may squeeze the diaphragm against the nozzle to control fluid flow in response to fluid input pressures.</p> |
