Slide valve

Details Slide valve Slide valve

1995-08-15

1997-04-08

Fox, John C.

Valves and valve actuation

With means to increase head and seat contact pressure

With positive reduction

251172, F16K 320

Patent

active

056180241

ABSTRACT:
A slide valve for pipelines for the transporting of slide-laden gaseous or liquid fluids comprises a slide-valve housing within which a displaceable closure member rests in closing position with its closure surface against an inflated annular packing (66). The annular packing (66) is developed with a circumferential hollow space (82) which is in communication with a connection (78) for a source of pressure. An annular support spring (84) is arranged within the hollow space (82). The spring supports the annular packing (66) in its uninflated starting position, and rests in supporting manner for this purpose with its vertex region directed towards the closure surface of the closure member against the inner circumference of the hollow space (82) of the pressure-relieved, undeformed annular packing (66) which is inserted in the slide-valve housing and rests on all sides against its supporting walls.

REFERENCES:
patent: 3445087 (1969-05-01), Priese et al.
patent: 3642248 (1972-02-01), Benware
patent: 4137935 (1979-02-01), Snowdon
patent: 4145026 (1979-03-01), Chronister
patent: 4776564 (1988-10-01), Westenberg

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