Filter diaphragm for a recessed plate-type filter, a diaphragm filter plate, a diaphragm filter plate assembly and a recessed plate-type filter

A filter diaphragm for a filter plate assembly of a recessed plate-type filter, such as a filter press or a tower press, comprising:

• a sheet-like body having a flexible structure;
• and
• at least on a side of the body, a plurality of distinct attachment studs to be inserted into corresponding distinct attachment holes of a respective filter plate for attaching the diaphragm to the filter plate,
• wherein the attachment studs are arranged along a sealing region extending along a periphery of the filter diaphragm, the sealing region being formed as a bead at least partly surrounding the remaining portion of the diaphragm body,
• wherein the attachment studs extend in a direction perpendicular to the diaphragm body, and
• wherein the attachment studs are equipped with an opening extending through the filter diaphragm, between the opposing sides thereof.