Closure connection piece for a filler neck of a fuel tank

摘要

A closure connection piece (4) for a filler neck (1) of a motor vehicle has a filling ventilation interchange means for adaptation to different refuelling devices. In the case of a change-over valve to a filling (23) through a compensation chamber (2) is via a connecting channel (22) is permanently connected to a change-over valve (23) connected. For adaptation to a facility without suction, the connecting channel (22) is closed and the vent valve (5) with a connecting piece (18) for a line leading to an active carbon filter cap (17) having provided. In this way, tool costs for the production of the closure connection piece (4) kept particularly low.