A valve on the cartridge nozzle side has a valve body (8), a valve seat (4a), a first compression spring (10) for urging the valve body toward the valve seat, a seal ring (11) provided between the valve body urged by the first compression spring and the valve seat, a valve stem (8b) provided in a flow path communicated with a liquid discharge opening of a nozzle, and an intermediate plug (7) for supporting the first compression spring. A valve on the fuel cell filling opening section side has a valve body (26), a valve seat (22a), a second compression spring (27) for urging the valve body toward the valve seat, a seal ring (28) provided between the valve body urged by the second compression spring and the valve seat, a valve stem (26b) provided in a flow path communicated with a liquid reception opening, and a lower member (23) for supporting the second compression spring.
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