| 摘要 |
<p>A valve unit for sucking out a liquid inside a container main body, comprising a suck-in pipe (21), a bellows (22), a shaft case (16), a piston shaft (30), and a piston head (20). A first check valve (23) is installed upstream of the bellows and installed downstream is a second check valve (24). Installed between the shaft case (16) and the piston shaft (30) is a locking portion (35) for locking them together. The piston shaft (30) does not interfere with the second check valve (24) when the locking portion (35) locks, and fixes the second check valve (24) in its closed state when the piston head engages the port (12a) of the container main body with the locking portion (35) not locking.</p> |
