Valve

Details Valve Valve

1994-05-24

1996-02-27

Chambers, A. Michael

Valves and valve actuation

Valve

Materials

251 82, 25112917, F16K 3102

Patent

active

054942586

ABSTRACT:
A valve for regulating the flow of a liquid, for example in liquid chromatography, comprises a valve seat and a valve ball which are made of electrically conductive ceramic or glass material. Due to the electric conductivity, electrostatic charging is avoided which would otherwise attract dirt particles and lead to contamination and leakage of the valve. The valve is chemically inert and is not corroded by the solvents typically used in analytical chemistry.

REFERENCES:
patent: 3642545 (1972-02-01), Pammer et al.
patent: 3874635 (1975-04-01), Fletcher et al.
patent: 4139469 (1979-02-01), Rainin et al.
patent: 4734187 (1988-03-01), Visentin et al.
patent: 4832075 (1989-05-01), Dubach
patent: 4862907 (1989-09-01), Ledtje et al.
patent: 5002662 (1991-03-01), Ledtje et al.
patent: 5151178 (1992-09-01), Nickerson et al.
patent: 5271427 (1993-12-01), Berchem

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