Abstract: Method for fastening an accessory (2) at at least two points of a wall of a plastic fuel tank, this fastening taking place during the actual manufacture of the tank by molding. According to this method, the accessory (2) is provided, at least at one of its fastening points, with a fastening part (1, 1?) in such a way that the accessory (2) is fastened to the wall of the tank and can move relative to the corresponding fastening point on the wall of the tank (3).

Abstract: Sealing system for fuel tank fill head comprising: a valve (3) that can be moved between an open position, in which fuel may be introduced into a fill pipe, and a closed position in which the fill pipe is closed, the valve (3) passing from one position to the other under the effect of a pressure exerted by a filling nozzle head; and a locking system comprising at least two rotatable fingers (4) and an actuation system capable of controlling the moveable fingers (4), the system additionally comprising a rotatable ring (1) equipped with pins (5) that are capable of cooperating with the moveable fingers (4) and the valve (3) that comprises housings (6) that are capable of cooperating with the moveable fingers (4) when the sealing system is in a locking position. The invention also relates to a fill pipe equipped with such a sealing system.

Abstract: Sealing system for fuel tank fill head comprising: a valve that can be moved between an open position, in which fuel may be introduced into a fill pipe, and a closed position in which the fill pipe is closed, the valve passing from one position to the other under the effect of a pressure exerted by a filling nozzle head; a locking system capable of locking the valve in its closed position; and an actuation system capable of being moved between a closed position and an open position under the effect of introducing the filling nozzle into the fill head. The locking system and the actuation system are capable of cooperating together so that a displacement of the actuation system from its closed position to its open position causes a displacement of the locking system from a locked position to an unlocked position. The actuation system comprises a rotatable cam equipped with a coupling pin capable of cooperating with the locking system.