Seal for liquid injection valve for gas chromatography

Details Seal for liquid injection valve for gas chromatography Seal for liquid injection valve for gas chromatography

1983-06-08

1984-12-11

Swisher, S. Clement

Measuring and testing

Sampler, sample handling, etc.

Withdrawing through conduit or receptacle wall

7386483, 277162, G01N 120

Patent

active

044870809

ABSTRACT:
A sampling valve having a stem which reciprocates between a liquid filled chamber and a vaporizing chamber is provided with a stem seal comprised by a thermoplastic bushing fitted to the valve stem with an interference fit. The bushing is encircled by a compression band exerting a radial compressive force and is mounted in the valve body with end clearance to avoid axial compression.

REFERENCES:
patent: 3583231 (1971-06-01), Felton
patent: 3612545 (1971-10-01), Storms
patent: 3643511 (1972-02-01), Warncke
patent: 3751992 (1973-08-01), Morgan

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