Water drainage device, filter module, and method

A filter module comprising:

• a filter housing comprising a housing top part and a housing bottom part;
• and
• a water drainage device comprising:
• a valve housing comprising a valve bore;
• a valve body received at least in sections thereof in the valve bore;
• an actuation rod configured to actuate the valve body;
• and
• a coupling device operatively connecting the actuation rod with the valve body and configured to enable a tilting movement of the actuation rod in relation to the valve body;
• wherein the valve body, upon transfer of the water drainage device from the closed state, in which the valve body seals in relation to a valve seat of the valve bore,
• into the open state, in which the valve body is lifted off the valve seat and moves toward the housing top part of the filter housing wherein the water drainage device is arranged external to the housing bottom part;
• wherein a symmetry axis of the filter module and a symmetryaxis of the valve bore are slanted at a slant angle relative to each other, wherein the slant angle is an acute angle.