NASA NTRS · 19720000204
A piezoelectrically actuated ball valve
Abstract
Bimorph strip composed of two layers of poled piezoelectric ceramic material closes and opens valve. Strip performs like capacitator, allowing initial inrush of current when valve is energized and then only small leakage current flows as valve remains energized.
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Erwin, L. R., Schwartz, H. W., Teitelbaum, B. R.. 1972-05-01. A piezoelectrically actuated ball valve. https://ntrs.nasa.gov/citations/19720000204
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