| 摘要 |
A valve lining (3) for a twin chamber container maintained under gas pressure conditions and containing the components of a product in an inner chamber and an outer chamber (1, 2) for the mixture thereof in the outer chamber (1) before drawing off the mixture comprises a sealed draw off tube (6) actually movable and engaged in an opening (17) of a cover (7) of the outer chamber smaller than the outer diameter, said tube allowing to push a wall (5) of the inner chamber (2), and a valve (11, 14) actuable to release the mixture. In order to make sure that the draw off is not possible before the mixing of the components, the cover carries inside a coupling device (8) surrounding the draw-off tube and provided with ports for the passage of the product (23, 27) to connect the inner chamber, the valve being actuated by displacing the draw-off tube from the outer end position wherein the valve is closed by passing through an intermediary position wherein the inner chamber wall is pushed, the valve being always closed in the other end position wherein the valve is open. |
