VALVE DEVICE

摘要

A valve device, which is attached to a fuel tank, comprises a main body part provided with a vent port at the inner end of a connection passage of the fuel tank communicating with its outside, a valve element for opening and closing the vent port by utilizing the level of a fuel, and a skirt part which extends downward from the main part so as to surround the valve element and introduces the fuel into the inside due to a difference in pressure between the inside and the outside of the fuel tank when the level of the fuel reaches the skirt part.