Filter press plate for layer and settling layer filters

A filter press plate for layer and settling layer filters comprising a frame of stainless steel which defines at least one internal area, said frame having exteriorly projecting hollow eyes forming when a plurality of elements are stacked together in use manifolds for supplying and removing the liquid being filtered and passages connecting the interior of said eyes with the internal area of the frame, and within said internal area at least one separate partition plate of corrosion resistant material for supporting the filtering material, each said at least one partition plate extending over substantially the entirety of the corresponding internal area and being spaced along its exterior edges from the adjacent interior edges of said frame a distance sufficient to accommodate any difference in the heat expansions of said at least one plate and frame at the maximum temperature to which the filter press plate is to be exposed, each said at least one partition plate and frame having cooperating lugs and recesses on their adjacent exterior and interior edges for detachably securing the plate within the frame, each said at least one partition plate having its side faces profiled to form channels for supplying and removing the liquid being filtered.