Point of use filtration system with backwash
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United States of America Patent
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Jan 24, 2017
Grant Date -
Sep 11, 2014
app pub date -
Mar 7, 2014
filing date -
Mar 7, 2013
priority date (Note) -
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Abstract
A system and method for a point of use filtration system with backwash is provided. The system includes a first filtration element, a tank, and a second filtration element positioned downstream from the tank. A first and second valve are each positioned downstream from the first filtration element. A first control line is coupled to a first control switch or a first permeate line and the first valve, and a second control line is coupled to the second control switch or a second permeate line and the second valve. When the point of use demands permeate water, the first and second pressure drops cause the first and second valves to open so water from the tank flows in a reverse direction to backwash the first filtration element and exit through the first and second valves to the drain, while water from the tank simultaneously flows through the second filtration element to the point of use.
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