Automatic switching valve

Details Automatic switching valve Automatic switching valve

1990-08-06

1991-05-21

Cohan, Alan

Fluid handling

Processes

137119, F16K 1102

Patent

active

050166646

ABSTRACT:
An enclosed valve with one inlet connected by a rotating gate to two alternative outlets. The fluid pressure keeps the gate in position to seal the first outlet while the second one is open. When the pressure is sufficiently reduced, a spring releases the gate from the first outlet and swings it to a new position, whereby it leaves the first outlet open and seals the second outlet. That gate position is maintained upon repressurization until a new pressure drop is experienced. Then, the reverse takes place and the gate swings in the opposite direction to open the second outlet and again seal the first one.

REFERENCES:
patent: 470489 (1892-03-01), Henkel
patent: 2893416 (1959-07-01), Hegstad
patent: 3425437 (1969-02-01), Knerr et al.
patent: 3570539 (1971-03-01), Herring
patent: 3667498 (1972-06-01), Mizuno
patent: 3841346 (1974-11-01), Amblank
patent: 4178954 (1979-12-01), Klieves
patent: 4807665 (1989-02-01), Schiel

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