Plastic high vacuum piping components

Details Plastic high vacuum piping components Plastic high vacuum piping components

1994-10-12

1995-06-20

Williams, Hezron E.

Measuring and testing

With fluid pressure

Dimension, shape, or size

73 232, G01M 302

Patent

active

054252644

ABSTRACT:
A method for making vacuum components from plastic material, and in particular, PVC and CPVC, where the plastic component is exposed to a high vacuum or ultra high vacuum for an extended period of time, by which the outgas rate drops considerably to levels that are well within required limits for high vacuum and ultra high vacuum applications. Residual gas analysis may be used to certify this low outgas level for the plastic components.

REFERENCES:
"Outgassing Properties of Some Materials", Gupta et al, Published Jun. 10, 1972.

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