CHECK VALVE ASSEMBLY FOR A RECIRCULATION TUBE
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United States of America Patent
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-
N/A
Issued Date -
Aug 8, 2002
app pub date -
Feb 7, 2001
filing date -
Feb 7, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A check valve assembly is disclosed for use with a fuel vapor recirculation tube in a fuel system for an automotive vehicle. The vapor recirculation tube has a lower end open to the fuel tank and an upper end open to the upper end of the fuel filler pipe. The check valve assembly includes a housing having a throughbore, and the housing is positioned within and fluidly in series with the recirculation tube adjacent the upper end of the recirculation tube. The housing includes a valve seat at its end closest to the filler pipe while a normally open valve is mounted to the housing and movable from an open position to a closed position in response to liquid fuel flow into the upper end of the recirculation tube.
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