Shut-off valves for pipelines

Details Shut-off valves for pipelines Shut-off valves for pipelines

1993-12-21

1995-01-10

Fox, John C.

Valves and valve actuation

With means to increase head and seat contact pressure

With positive reduction

251197, F16K 300

Patent

active

053799836

ABSTRACT:
A shut-off slide valve for use in pipelines or for closing a container aperture includes a housing, a shut-off member formed of a sealing plate and a counter element spaced from the sealing plate and displaceable in the housing, and an actuation member for displacing the shut-off member in the housing, with the actuation member having a portion extending between the sealing plate and the counter element, and at least one of the sealing plate and the counter element having a collar substantially bridging the space between the sealing plate and the counter element, so that the shut-off member has a shape similar to that of a lid-covered can.

REFERENCES:
patent: 2204142 (1940-06-01), MacClatchie
patent: 4052036 (1977-10-01), Schertler
patent: 4290580 (1981-09-01), Balhouse
patent: 4470576 (1984-09-01), Schertler
patent: 4651973 (1987-03-01), Oliver

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