Abstract: A filter element for a pressure filter where a substantially horizontal wall (3) divides the interior of a pressure vessel into a lower inlet compartment (5) and an upper outlet compartment (6). A filter element (20) having a filter medium (40) is suspended from the wall (3) such that the filtering takes place from the inlet compartment (5) through the filter element (20) up to the outlet compartment (6). A corrugated sheet (22) is provided which defines a plurality of substantially vertically extending channels (45) and (42). Each first channel (45) is open the inlet compartment (5) with the filter medium (40) covering the first channels (45) with the upper end of the first channels (45) being closed and the lower end of the first channels (45) being open at (43). The second channels (42) being formed on an inner side of the corrugated sheet (22) with an open bottom end and an upper end communicating with the outlet compartment (6).

Abstract: A nozzle, preferably a nozzle for a spray pipe, designed and arranged for cleaning whilst in operation, comprising a nozzle body (2), in which there is disposed a tightly fitting turnable body (1) having an orifice (9) for shaping a fluid jet and wherein on the nozzle body there are provided structure (2) for securing the nozzle to a supply pipe (4), preferably a spray pipe, characterised in that hole (10), having a diameter approximately equal to that of the supply pipe (4) is bored partly through the turnable body (1), that jet shaping orifice (9), having a smaller opening than the hole (10), is formed as an extension thereof through the turnable body (1) and that jet pod (11), having a diameter approximately equal to the diameter of the supply pipe (4), is bored through the turnable body (1) approximately perpendicular to the first hole (10) and intersects it.

Abstract: A filter for filtering of a fluid, including a housing having an inlet port for the fluid to be filtered, an outlet port for filtered fluid and an outlet port for filtered fluid and an outlet port for rehect, In a body arranged in the housing to be rotatable between at least two positions of rotation, there are at least two positions of rotation, there are at least two interconnecting flow channels of which at least a first is provided with a filtering means through which filtering takes place in a first rotational position, wherein one end of the first flow channels communicates with the inlet port, and through which backwash takes place in the second rotational position, wherein said end of the first flow channel communicates with the outlet port for reject. The first flow channel is provided with a filtering means at each end. A second of the at least two flow channels connects to the first flow channel between the filtering means and is in constant connection with the outlet port for filtered fluid.