NASA NTRS · 19680000125
Vacuum-jacketed transfer line installation technique
Abstract
Rolling-type spacers in the form of steel balls retained in appropriate sleeves affixed at intervals to the exterior of the transfer line facilitate the installation of a vacuum-jacketed line. They act as standoffs to position the transfer line concentrically within the vacuum jacket line.
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Bowers, W. M.. 1968-04-01. Vacuum-jacketed transfer line installation technique. https://ntrs.nasa.gov/citations/19680000125
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