Reverse osmosis water-on-water control valve
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United States of America Patent
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Jan 23, 2018
Grant Date -
Apr 17, 2014
app pub date -
Sep 26, 2013
filing date -
Oct 11, 2012
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Abstract
Described are water-on-water valves for use in reverse osmosis filtration systems. The water-on-water valves are regulated by the pressure in a product line, which contains fluid from a product line of the filter module and/or the product side of a water-on-water storage tank. Exemplary valves are shuttle valves that are regulated by the pressure downstream of the product side of a reverse osmosis filter module. The valves may comprise a piston within a housing, and an end of the piston may have an enlarged diameter relative to the maximum diameter of the remainder of the piston.
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