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Automatic protective vent has fail-safe featureDelayed vent valve system in a mechanical backing pump in a vacuum system allows the pneumatic foreline valve to seal before the pump vent opens. The system is designed to be fail-safe and operate even though there is loss of electrical power.
Document ID
19660000368
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Dameron, C. E.
Date Acquired
August 3, 2013
Publication Date
August 1, 1966
Subject Category
Mechanics
Report/Patent Number
Report Number: LAR-218
LAR-218
Accession Number
66B10369
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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