| 摘要 |
An outlet shutoff valve (22) where pressing surfaces (A, B), which press against each other, of a valve body (58) and a valve seat (80) are tilted relative to the vertical direction and where a drive shaft (60) can be driven in a direction tilted relative to the vertical direction. In the outlet shutoff valve (22), the pressing surfaces (A, B) are set high in the upstream side of gas flowing in a flow path forming pressure chamber (56), where the gas flows, and low in the downstream side. |
