Valve device and manually operated shutoff valve device
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United States of America Patent
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Jul 2, 2013
Grant Date -
Apr 30, 2009
app pub date -
Sep 22, 2008
filing date -
Sep 25, 2007
priority date (Note) -
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Abstract
In a valve device for selectively opening and closing a flow passage formed to open on a valve seat by a valve body through a resin-made seat, a hollow portion is formed on either one of the valve body and the valve seat and receives the resin-made seat therein, the resin-made seat has a thickness so that the resin-made seat partly protrudes from the hollow portion, and when the valve body is operated to close the flow passage, the resin-made seat is compressed to bring an end surface of the valve body into contact with the valve seat.
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