Anti-scaling control element for a rotary control valve
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United States of America Patent
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-
N/A
Issued Date -
Sep 23, 2004
app pub date -
Mar 19, 2003
filing date -
Mar 19, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A control element for a rotary control valve is attached to a rotating shaft by at least one ear. The control element includes at least two surfaces, the first surface being generally sealable with a flow ring. The second surface is generally recessed from the first surface to facilitate fluid flowing through the valve across the first surface to prevent scaling or buildup of foreign material on that surface.
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Family
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