Patent ID: 8371330

Claim:
A valve device that is installed on a gas tank and opens and closes a gas passage, comprising: a housing having a housing space; and a passage member that is fixed to the housing and has a through hole, through which the housing space and the gas passage communicate with each other, wherein: the housing has a filling port, through which the housing space and an outside of the valve device communicate with each other; the housing space contains a filter, disposed between the filling port and the through hole of the passage member, for filtering a gas that is filled into the gas tank through the filling port and a valve element disposed between the filter and the filling port, the valve element being moved between the filter and the filling port by a flow of the gas; and a recess portion for holding the valve element that directly contacts an end portion of the filter, wherein, when the gas in the gas tank passes through the through hole and the filter and flows into the housing space, the valve element moved toward the filling port seats on a valve seat formed around the filling port and closes the filling port.