Backwashable fluid filter

Details Backwashable fluid filter Backwashable fluid filter

1980-02-07

1981-10-20

Adee, John

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Filter cleaning

210411, B01D 2938

Patent

active

042959632

ABSTRACT:
A backwashable filtering device is described including a backwash nozzle and means for effecting relative movement between it and the filter body, and further including a valve assembly movable to open or close the passage between the filter body and the housing outlet in response to low pressure conditions, thereby to maintain the pressure for backwashing the filter body via the nozzle.
Also described is the provision of a sleeve axially movable to open or close a passage between the housing inlet and the filter body, which sleeve is movable either manually or automatically in response to pressure or other specified condition.

REFERENCES:
patent: 3717252 (1973-02-01), Picard
patent: 4042504 (1977-08-01), Drori
patent: 4045345 (1977-08-01), Drori

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