Relieving pressure differential in vacuum filter
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United States of America Patent
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-
Feb 18, 1986
Issued Date -
N/A
app pub date -
Dec 31, 1984
filing date -
Jan 16, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A filter system and method are provided utilizing a filter tank separated into an inlet compartment and a filtrate compartment by a filter media. Under normal filter operation, the liquid to be filtered enters the inlet compartment, is passed through the filter media and out the filtrate compartment by a pressure differential created across the filter media by a pump device. When the need arises to move the filter media as a result of the buildup of contaminents on it, it is necessary to alleviate the pressure differential across the filter media. Such pressure differential is alleviated by the controlled flowing of filtered liquid through an orifice in a closed valve into the filtrate compartment.
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