Reducing agent i.e. urea solution, refilling container, for tank in motor vehicle, has neck attached to filler pipe in filling position, where neck supports ring piston with hub at filler pipe

摘要

The container (1) has a ring piston (6) movably guided in a neck (2) and provided with a stop (7), which is laid at an inner side (10) of the container. A pressure spring (9) heavily loads the stop at the piston axially on the neck, where the piston is locked at an end turn towards to a base (11). The stop is internally engaged by pressure of the pressure spring at the container in a closing position of the piston. The neck is attached to a filler pipe (5) in a filling position, where the neck supports the ring piston with a hub (16) at the filler pipe.