NASA NTRS · 19660000194
Segmented ball valve is easy to open and close
Abstract
Segmented ball valve and flowmeter in the same spherical housing provide a valve that will handle large fluid volume without bulkiness and weight of blade valves or conventional ball valves. The valve is easily opened or closed and the flowmeter remains stationary, so errors are eliminated.
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Prono, E., Shinault, L. H., Speisman, C.. 1966-06-01. Segmented ball valve is easy to open and close. https://ntrs.nasa.gov/citations/19660000194
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