A filter for removing solids from water to be fed to a power-plant condenser comprises a substantially cylindrical housing and a substantially cylindrical filter basket in the housing which is provided with a radial inlet and an axial outlet for the water. The filter basket comprises a stack of axially continguous filter rings, each of which has an outwardly concave perforated periphery and a pair of flanges lying in planes perpendicular to the axis of the basket and bolted together to form the basket as a self-supporting unit.
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