Liquid purification or separation – Flow – fluid pressure or material level – responsive – Check valve
Patent
1996-01-31
1997-12-02
Drodge, Joseph W.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Check valve
137511, 13762546, 210275, 210278, 210425, 210541, B01D 35143, B01D 2966
Patent
active
056932197
ABSTRACT:
An adapter valve for backwashing a water filter is releasably connected between the water filter housing cover and enclosure. The adapter valve includes a body having a source port for fluid communication with an inlet port of the cover, a storage port for fluid communication with an outlet port of the cover, a filter inlet port for fluid communication with an inlet port of the enclosure, a filter outlet port for fluid communication with an outlet port of the enclosure, a backwash port for fluid communication with a backwash tank, a discharge port for fluid communication with a discharge line and a cavity in fluid communication with the source, filter and discharge ports. A check valve is positioned between the filter outlet port and the storage port and between the backwash port and the storage port for permitting fluid flow to a storage tank during normal operation and for blocking fluid flow from the storage tank during backwash operation. A rotary valve retained in the cavity is actuatable between a normal mode permitting fluid flow from a water source through the filter to a storage tank and a filter backwashing mode permitting fluid flow from a backwash tank through the filter in the opposite direction to a discharge line.
REFERENCES:
patent: 2434958 (1948-01-01), Quinn
patent: 2679319 (1954-05-01), Walker
patent: 2948398 (1960-08-01), Engholdt
patent: 3021276 (1962-02-01), Mast
patent: 3286842 (1966-11-01), De Jong
patent: 3698554 (1972-10-01), Mail
patent: 3841485 (1974-10-01), Malkin
patent: 3954620 (1976-05-01), Nebolsine
patent: 4102786 (1978-07-01), Okada et al.
patent: 4191652 (1980-03-01), Whitmore
patent: 4451361 (1984-05-01), Paterson
patent: 4486307 (1984-12-01), Weiler
patent: 4632150 (1986-12-01), Gagas
patent: 5089117 (1992-02-01), Nichols
patent: 5122287 (1992-06-01), Hsuing
patent: 5137645 (1992-08-01), Miller
patent: 5145588 (1992-09-01), Pedersen
patent: 5160613 (1992-11-01), Walter
patent: 5167840 (1992-12-01), Jaccarino
patent: 5244013 (1993-09-01), Gagas
patent: 5288398 (1994-02-01), Angelino
patent: 5288399 (1994-02-01), Schulz
patent: 5350505 (1994-09-01), Tang
patent: 5364525 (1994-11-01), Hagqvist et al.
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