Abstract: A fuel interrupt/pressure release valve arrangement includes a casing mounted at an upper portion of an interior space of a fuel tank. The casing has openings for communicating the interior of the casing with an atmosphere the interior of the fuel tank. A valve housing is formed in the casing having a discharge opening at an upper end. The opening is closed by a stopper biased in a valve closing direction by a spring. A float is provided in the casing having an indentation for loosely receiving the valve housing and a through hole is formed through the float at an apex of the indentation corresponding to the position of the discharge opening of the valve housing. A protrusion formed on the float in the vicinity of the through hole so as to project in an opening direction of the valve so as to be normally in touching contact with the stopper.