Control valve, in particular plug valve with sealing system

Details Control valve, in particular plug valve with sealing system Control valve, in particular plug valve with sealing system

2006-09-26

2006-09-26

Look, Edward K. (Department: 3751)

Valves and valve actuation

Mechanical movement actuator

Particularly packed or sealed

C277S553000, C277S555000

Reexamination Certificate

active

07111821

ABSTRACT:
The present invention relates to a plug valve comprising a valve body and a shutter that can be actuated, in the form of a segment of a sphere provided with a mobile shaft in rotation and/or translation, said valve also comprising a double-barrier sealing system at the level of said shaft, said valve being characterised in that the joints of said double-barrier sealing system are maintained in place relative to the shaft by a single lid.

REFERENCES:
patent: 3192942 (1965-07-01), Manor et al.
patent: 4592558 (1986-06-01), Hopkins
patent: 4658847 (1987-04-01), McCrone
patent: 5056758 (1991-10-01), Bramblet
patent: 6161838 (2000-12-01), Balsells
patent: 1052439 (2000-11-01), None
patent: 02447279.7 (2002-12-01), None
patent: 2340899 (2000-01-01), None

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