NASA NTRS · 19790000410
Positive isolation disconnect
Abstract
Positive-isolation-disconnect (PID) device with two mating halves prevents leakage or spillover when two fluid lines are disconnected. Each half has shutoff poppet to stop fluid flow. When flow is shut, poppets are flush against each other, leaving no space for fluid to remain it.
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Friedell, M. V.. 1980-04-01. Positive isolation disconnect. https://ntrs.nasa.gov/citations/19790000410
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