safety valve for venting circuit of a fuel tank for motor vehicles

The invention relates to a safety valve for ventilation circuit of a fuel tank for motor vehicles. The valve according to the invention is characterized in that it comprises a housing 1 having an inlet 2 and an outlet 3, a shutter member 5 adapted to close said outlet 3, a float 4 and biassing means 8, 9 adapted to control said closure member 5. application to the car industry.