| 摘要 |
<p>A check valve 8 has a fixing ring 19 that is mounted on the rear end side of a housing 11 in the manner of being rotatable relative to the housing 11 and fixes the housing 11 to a container main body 2 from rearward. It is possible to fix the housing 11 easily by plunging the fixing ring 19 from rearward. By installing the fixing ring 19, it is possible to eliminate a screw joint that has heretofore been required. With the arrangement, the control of tightening torque is not required and assembly work can be simplified.</p> |
