Liquid purification or separation – Flow – fluid pressure or material level – responsive – Discharge of treated material
Patent
1987-11-25
1990-01-23
Fisher, Richard V.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Discharge of treated material
210135, 2102572, 21032183, 137218, 13767518, 13762527, 137801, B01D 1300, B01D 3502
Patent
active
048956546
ABSTRACT:
A purified water dispensing and reject water control device is provided for operative association with a pressurized feed water supplied reverse osmosis cartridge that has purified water and reject water outlets and a tank that is subdivided by a movable barrier into first and second compartments of variable volume that receive purified and reject water and may have same discharged therefrom. The control device includes a single elongate tube that actuates first and second valve members that tend to remain in first positions. Purified water from the purified water outlet flows to the first compartment and reject water from reject water outlet flows through a first flow restrictor and then through a second flow restrictor defined by the tube to the drain when the valve members are in first positions. When the tube and first and second valve members are moved to second positions, reject water substantially by-passes the first and second flow restrictors to flow to the second compartment to expand the same and force purified water from the first compartment through an elongate passage partially defined by the elongate tube to a dispensing outlet. When the elongate tube and first and second valve members return to first positions, dispensing of purified water is terminated, and the flow thereof directed to the first compartment to expand the same and displace reject water fromthe second compartment. The displaced reject water enters the control device to flow through the second flow restrictor to the drain.
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Evans Linda S.
Fisher Richard V.
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