| 摘要 |
<p>A valve (6) including a valve body (7) intended to be mounted in a recessed portion (5) on a can (1), a valve rod (12) which is axially movable in the valve body, and a resilient return device (18) for returning the valve rod to a closing position. The valve (6) is combined with a gravity-responsive check valve (C) for sealing the outlet of the valve (6) when the container is out of its normal operational position. A micro-opening (F) is provided in the wall of the valve body (7) for establishing communication between the inner pressurized space of the container (1) and the area of the valve (6) that is located downstream from the sealing element (21) of the closed check valve (C) to balance pressure across said sealing element (21).</p> |
