NASA NTRS · 19830000669
Double-Poppet Valve
Abstract
New valve design includes two poppet/seat combinations actuated simultaneously. If one fails, other continues to seal against fluid flow. Valve primarily useful for handling dangerous fluids and lighter and more compact than comparable redundant-valve systems used at present.
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Huber, W. C.. 1984-11-01. Double-Poppet Valve. https://ntrs.nasa.gov/citations/19830000669
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