Liquid purification or separation – Flow – fluid pressure or material level – responsive – Plural elements controlled
Patent
1996-01-05
1997-09-02
Fortuna, Ana
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Plural elements controlled
2102572, 2101952, 210136, 210 90, 2104331, B01D 2130, B01D 6300
Patent
active
056627939
ABSTRACT:
A valve assembly for a reverse osmosis water purifier system that contains all of the control and check valves required for the system. The valve assembly is operative to provide squeeze water pressure to a pure water storage tank for providing delivery pressure to the pure water, for venting squeeze water to drain during purification, for turning on the tap water line during purification and dispensing and to shut off the tap water at all other times, to provide a flow of bleed or waste water through the reverse osmosis unit during purification and not at other times, including but not being limited to during dispensing, to provide a check valve in the pure water line to the dispensing head to maintain pressure in that line during purification when the pure water pressure in the accumulator tank is very low, and to provide a check valve between the pure water outlet of the reverse osmosis unit and the pure water connection to the pure water accumulator tank to prevent back pressuring the reverse osmosis unit membrane.
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