| 摘要 |
An aersol valve device for use with spray canisters using compressed gas as a propellant. The valve device comprises an aerosol valve (3) and a connector for a riser tube (4) which, in the operative condition, extends nearly to the bottom of an aerosol container (1). A two-way valve (16) is provided between the aerosol valve (3) and the connector. The two-way valve (16) comprises a body (17) with a central bore (19), in which two opposed valve seats (20, 23) are formed to seat a valve member (21) movable to and fro between said valve seats (20, 23). Automatic actuating means (28) for actuating said valve member (21) control the valve member (21) depending on the position of the container (1). The valve member (21) cooperates with one valve seat (23) to clear connection between the riser tube (4) and the aerosol valve (6) and simultaneously to block a connection between the direct surroundings of the two-way valve (16) and the aerosol valve (6), and cooperates with the other valve seat (20) to block the connection between the riser (4) tube and the aerosol valve (6) and at the same time to clear a connection between the direct surroundings of the two-way valve (16) and the aerosol valve (6). |
