| 摘要 |
PURPOSE:To improve shock resistance and to prevent a break accident of a discharge valve by reinforcing the discharge valve itself such as floding the periphery of the tip section of the discharge valve to form a folded section, etc. CONSTITUTION:The periphery of the tip section of a discharge valve 8 is folded to form a folded section 19, and a reinforcing section reinforcing the discharge valve 8 is formed with the folded section 19. Accordingly, the periphery of the tip section of the discharge valve 8 is reinforced, thereby a break accident can be prevented. |
