Slide valve

Details Slide valve Slide valve

1991-07-12

1992-04-07

Nilson, Robert G.

Fluid handling

Systems

Sequentially progressive opening or closing of plural valves

251167, 251176, 251197, F16K 318

Patent

active

051018616

ABSTRACT:
A slide valve comprising: a valve body having two axially aligned openings provided with means for connection in a duct; a drive rod; a valve member; and a backing member; wherein the valve member includes a hollow opening out to both faces of the valve member and fitted with a piston movable between a simple abutment at one end and a shoulder in the hollow at an opposite end, the piston bearing against said shoulder via sealing means, a return spring urging said piston towards said simple abutment, said piston including, at its simple abutment end, means for co-operating with a sloping ramp of said drive rod such that during closure of the valve, the piston is thrust against said shoulder of the hollow.

REFERENCES:
patent: 1559515 (1925-10-01), Bottner
patent: 1932471 (1933-10-01), McKellar
patent: 2670752 (1954-03-01), Laurent
patent: 4779649 (1988-10-01), Balter

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