Selectable filter assembly
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United States of America Patent
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-
Mar 12, 1985
Grant Date -
N/A
app pub date -
Jul 19, 1983
filing date -
Jul 20, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A filter arrangement has two hollow, coaxial, cylindrical filter elements, one of which is closed at one end and the other of which is connected to a clean fluid outlet. The outsides of the filter elements are separated from each other by an intermediate ring. A three-way valve is operable by an operating member to connect an inlet for the raw fluid to either or both of first and second filter elements. A control member operates valves for opening and closing an outlet for dirty fluid is operated at the same time with the three-way valve, dependent on its position. Both filter elements can be used simultaneously for filtering and also flow can be reversed through either filter element.
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