Abstract: A fluid vent valve (1) for a fuel tank, comprising: a valve body (10) having an inlet opening connected or connectable to a tank, an outlet opening and a main chamber (13) interposed between said inlet opening and said outlet opening (12); a piston (20) inserted or insertable in the main chamber (13) and movable therein so as to define a closed configuration and an open configuration; a pendulum (30) hinged to the valve body (10) and coupled to the piston (20) so as to promote a movement of the piston (20) between the two configurations; a flow reducer (40) operatively interposed between the outlet opening (12) and the piston (20).

Abstract: Provided is a switch for motor vehicles including an outer containing and protecting body which houses a lock cylinder. The lock cylinder is adapted to receive an ignition key and is rotatable through several operative positions by means of the rotation of said key. An antenna is connectable to an electronic immobiliser that is adapted to transmit to a control unit of a motor vehicle the motor vehicle engine ignition enable/disable signals. The antenna is located at said outer body.