NASA NTRS · 19790000504
A low-cost molecular-leak value
Abstract
Solenoid operated modular-leak and shutoff valve has been developed for small portable, automated, mass spectrometer used to measure trace constituents of air or other gases. Valve costs much less to produce than precision needle-in-foil type. Yet its performance closely matches that version.
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Judson, C. M., Lawrence, J. L., Jr., Pickett, F. P.. 1980-06-01. A low-cost molecular-leak value. https://ntrs.nasa.gov/citations/19790000504
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