| 摘要 |
A container assembly comprising a container, a valve disposed in the container and an axially movable plunger element disposed axially rearward of the valve. The plunger element defines a first volume in the container between the plunger element and the valve. The valve comprises a permanent seal sealing the valve to the container about the entire perimeter of the valve, and a channel bypassing the permanent seal and being in fluid communication with the atmosphere outside of the container assembly and being selectively sealed from the first volume by a resilient seal. The resilient seal is moveable from a sealing configuration to an open configuration upon fluid pressure in the first volume exceeding a first pressure threshold. |
