a bleed valve which is intended for the fuel tank of a vehicle has a housing , a floating body disposed in such a manner as to be able to move in the longitudinal direction . a rim of an outlet orifice forms a valve seat for a sealing element which is supported by a support disc , wherein the support disc is articulated in a cardanic manner on the floating body . the sealing element is disposed in such a manner as to be able to move according to the movement of the floating body between a position which closes the outlet orifice and a position which opens same , wherein as a result of the said articulation of the support disc on the floating body positional changes , e . g . inclined positions , which are caused by the drive operation of the vehicle do not impair the sealing function .