NASA NTRS · 19950065435
Low-Leak, High-Flow Poppet Valve
Abstract
Valve with conical poppet modified to incorporate smooth transition to segment of sphere at upstream end of cone. Constitutes sealing surface of poppet; results in leak rate equivalent to ball-type poppet, and extremely low flow losses. Also enables use of loose fit for guiding poppet, with resulting lower manufacturing cost, high reliability, and long operating life.
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Tervo, John N.. 1995-06-01. Low-Leak, High-Flow Poppet Valve. https://ntrs.nasa.gov/citations/19950065435
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