| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a purge unit using a container valve capable of efficiently and reliably removing residual gas, a purge system, and a purge method.SOLUTION: A secondary side flow passage 43 is constituted by an introduction side secondary side flow passage 44 for allowing supply of purge gas, and an emission side secondary side flow passage 45 for allowing introduction of the purge gas, in which respective valve chamber inner openings 44a, 45a formed in a closed valve chamber 412 are isolated from each other in a direction when seen in a plane view. A purge path P communicated with a valve chamber inner space A, the introduction side secondary side flow passage 44 and the emission side secondary side flow passage 45 is constituted. A PTFE packing 50 mounted to a packing mounting recess part 21 formed at an end of an outlet 20 comprises an introduction side through hole 51a for allowing connection of a purge supply pipe 71, and an introduction side through hole 51b for allowing connection of a purge recovery tube 72.</p> |
