NASA NTRS · 19670000466
Hand-operated plug insertion valve
Abstract
Hand-operated plug insertion valve seals an evacuated insulation system for upper stage liquid hydrogen tanks on the launch pad. It is light in weight, demountable, and permits evacuation of the system plus sealing after evacuation.
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Jones, R. G., Roney, J. A.. 1967-11-01. Hand-operated plug insertion valve. https://ntrs.nasa.gov/citations/19670000466
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