Abstract: A filter nozzle equipped with annular filter discs which establish flow paths (26, 28), serving to conduct the filter liquid and which paths are radial (28) and also penetrate through (26) the filter discs (18). These passages (26) through the filter discs (18) are in themselves formed as passages (26) that become narrow in the flow direction of the filtered water, and are distributed uniformly over the disc (18). The discs (18) have projections which ensure that the passages (26) of two adjacent discs are not in alignment. With such a filter nozzle, the danger of blockage is much less than with known nozzles, assuring a steady operation and requiring less frequent cleaning.