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Conserving Purge GasesTwo-step flow control adjusts to dimensional changes in purged equipment. Two pressure actuated valves provide two-step control. When turbopump starts, helium flows through both valves. As pump operates its parts expand, clearance decrease and back pressure builds up on valves. At preset back pressure value, one valve closes, reducing helium flow.
Document ID
19840000140
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Kan, K. (Rockwell International Corp.)
Blewett, L. (Rockwell International Corp.)
Nelson, T. (Rockwell International Corp.)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Publication Information
Publication: NASA Tech Briefs
Volume: 8
Issue: 3
ISSN: 0145-319X
Subject Category
Mechanics
Report/Patent Number
MFS-19625
Accession Number
84B10140
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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