Patent ID: 8551334

Claim:
A filter capsule ( 1 ) comprising: a filter housing ( 2 ) having opposite top and bottom end caps ( 4 , 5 ) spaced apart along a longitudinal axis of the filter housing, an air release valve ( 26 ) projecting from the bottom end cap ( 4 , 5 ) and having a longitudinal axis ( 27 ) that is approximately transverse to the longitudinal axis ( 6 ) of the filter housing ( 2 ), at least one protective wall ( 28 , 32 , 33 , 34 ) formed on the bottom end cap ( 4 , 5 ) at a distance from the air release valve ( 26 ), and protruding by a distance measured parallel to the longitudinal axis ( 6 ) of the filter housing ( 2 ) that exceeds a projecting distance of the air release valve ( 26 ) measured parallel to the longitudinal axis ( 6 ) of the filter housing ( 2 ), and a further protective wall ( 28 ) extends transverse to the longitudinal axis ( 6 ) of the filter housing ( 2 ), the further protective wall ( 28 ) forming a bottom ( 29 ) of a radially arranged recess ( 30 ) of the end face ( 31 ) of the bottom end cap ( 5 ).