Abstract: The assembly arrangement comprises a reservoir (10) on which a filling container (20) having a bottom wall (21) is mounted; and a filter(30) mounted to said bottom wall (21) which presents a seat portion (24) provided of one or more windows (25a) and bearing a stopper element (40) provided of at least one opening (41 a) and moveable between a closed position and an open position of the seat portion (24). The filter (30) is upwardly seated against the bottom wall (21) and coupled to the stopper element (40), allowing the filter (30) to be moved between a release and assembly position, with the stopper element in the closed position, and an assembled position, moving the stopper element (40) to its open position and to which remains axially hold against said bottom wall (21), communicating inlet orifices (31a) of the filter (30) to the interior of the filling container (20).

Abstract: The assembly arrangement comprises a reservoir (10) on which a filling container (20) having a bottom wall (21) is mounted; and a filter(30) mounted to said bottom wall (21) which presents a seat portion (24) provided of one or more windows (25a) and bearing a stopper element (40) provided of at least one opening (41 a) and moveable between a closed position and an open position of the seat portion (24). The filter (30) is upwardly seated against the bottom wall (21) and coupled to the stopper element (40), allowing the filter (30) to be moved between a release and assembly position, with the stopper element in the closed position, and an assembled position, moving the stopper element (40) to its open position and to which remains axially hold against said bottom wall (21), communicating inlet orifices (31a) of the filter (30) to the interior of the filling container (20).