FIELD: chemical industry. SUBSTANCE: filter has body consisting of two covers, one of which being movable. Filtering element is positioned between covers. Movable cover has at least one unpurified water outlet hole and hole for pipe connection of purified water outlet. Filter is provided with filter mode-of-operation change-over device which is responsible for supply of purified or unpurified water. EFFECT: longer service life of filtering element. 2 cl, 1 dwg
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