Liquid flow-out prevention valve

Details Liquid flow-out prevention valve Liquid flow-out prevention valve

1998-05-13

1999-09-21

Michalsky, Gerald A.

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

137 43, F16K 2404

Patent

active

059540834

ABSTRACT:
A liquid flow-out prevention valve is basically formed of a cut-off valve and a relief valve attached to the cut-off valve. The cut-off valve includes a housing having an outlet in an upper wall, and a valve body disposed inside the housing to open and close the outlet. A flow path communicating with the outlet extends from above the upper wall to a side wall of the cut-off valve. The relief valve includes a valve portion formed in the flow path at a side of the side wall, and an inlet communicating with the flow path and opened and closed by the valve portion. The inlet is disposed above a liquid level of the cut-off valve in a fuel tank and is arranged to open upwardly. The liquid flow-out prevention valve can be made compact and operate reliably.

REFERENCES:
patent: 4905726 (1990-03-01), Kasugai et al.
patent: 4989629 (1991-02-01), Shirakawa
patent: 5277217 (1994-01-01), Kobayashi et al.
patent: 5522417 (1996-06-01), Tomioka et al.

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