Flow control valve
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United States of America Patent
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-
Mar 26, 1985
Grant Date -
N/A
app pub date -
Jan 7, 1983
filing date -
Jan 7, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In order to provide a valve which can provide separate flow paths for independent liquids and the possibility of interchanging the flow paths, there is provided an elliptical valve member 8 mounted on a spindle 7 within a cylindrical valve chamber. In the axial region of the valve member 8 there are provided ports 2 and 3 which are selectively placed in communication with the ports 4 and 5 in accordance with the position of the valve member 8. In order to provide for a safety break leakage path, the valve member 8 is preferably provided with two seals 13, e.g. lip seals or O-ring separated by a space which is vented, e.g. via a hollow passage 18 in the spindle 7.
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