NASA NTRS · 19660000472
Miniature valve accurately controls small volume fluid flow
Abstract
Hydraulic or pneumatic actuated valve accurately controls small volume flow of liquids or gases by expanding or relaxing an O-ring within an annular flow space. In one application, 2 such valves were used to accurately meter small volumes of helium under a pressure of 1000 psi.
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Grunwald, A.. 1966-11-01. Miniature valve accurately controls small volume fluid flow. https://ntrs.nasa.gov/citations/19660000472
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