| 摘要 |
PROBLEM TO BE SOLVED: To reduce a pressure of a filling gas to an aerosol container. SOLUTION: A sealing member 16 for opening/closing between fixed quantity chambers 14a and 14c and their upstream space 14f is provided to move downward with respect to a stem 11 by a pressure of a compressed gas in a filling mode of the gas. The sealing member 16 comprises a tube including a flange 16a, and the flange 16a has a large upper surface 16b to which a filling pressure of the compressed gas is sufficiently applied. When the compressed gas is filled from an inlet 13a with the stem 11 forced to be pushed down, the upper surface 16b receives the pressure of a compressed gas flow, so that the sealing member 16 moves downward further from the stem 11 against a spring 19. Since a passage 16g' is formed from the stem 11, the compressed gas can easily flow from the constant quantity chambers 14a and 14c into the upstream space 14f and the inside of a container 22, and the filling pressure of the compressed gas can thus be reduced. A sealing member which flexes by the filling pressure of the compressed gas flow to form a passage is also disclosed. |
