| 摘要 |
<p>A valve device is configured such that a shutoff valve body (40) is adapted to fully open a connection channel (10) when a drive rod (30) is located at an axial position at which the drive rod (30) is located at the intermediate position between a first closing position and a second closing position, such that a through-hole (50) for connecting the connection channel (10), which is located closer to a reed valve section (12) than a second valve seat (54), and a second pressure chamber (14b) is formed in a casing (4), and such that, when the drive rod (30) is at the first closing position, fluid pressure from an output port (8) acts on the second pressure chamber (14b) and can forcibly move the drive rod (30) to the second closing position.</p> |
