Liquid purification or separation – Flow – fluid pressure or material level – responsive – Plural elements controlled
Patent
1977-03-28
1978-04-25
Spear, Jr., Frank A.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Plural elements controlled
210257M, 210433M, 210321R, B01D 3100
Patent
active
040861660
ABSTRACT:
A water filtering and dispensing apparatus comprising a filtering device receiving unfiltered water under pressure from a water service system and operable to deliver filtered water and waste brine under pressure, a filtered water delivery line extending from the device to a dispensing valve, a storage tank with spaced brine inlet and outlet openings, a brine line between the device and the inlet opening, a pressure reducing regulator in the brine line upstream of the tank, a filtered water receiving inflatable bladder in the tank and means connecting the bladder with the delivery line upstream of the dispensing valve, a waste line connected with and extending downstream from the brine outlet opening in the tank, a flow limiting flow control means and a normally open bladder actuated shut-off valve downstream of the tank, said shut-off valve operable to close only when the bladder in the tank is filled with a full supply of filtered water, whereby flow of waters and brine into and out of the apparatus stops when a full supply of filtered water is established and is re-established when filtered water is dispensed and less than a full supply exists.
REFERENCES:
patent: 3384240 (1968-05-01), Berardi
patent: 3493496 (1970-02-01), Bray et al.
patent: 3565256 (1971-02-01), Loeffler
patent: 3616921 (1971-11-01), Bray
patent: 3630378 (1971-12-01), Bauman
patent: 3688911 (1972-09-01), Baerg
patent: 3716141 (1973-02-01), Spatz
patent: 3719593 (1973-03-01), Astil
patent: 3794172 (1974-02-01), Bray
patent: 3794173 (1974-02-01), Bray
patent: 3831757 (1974-08-01), Gossett et al.
Maxwell Georges A.
Spear, Jr. Frank A.
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