| 摘要 |
PCT No. PCT/DK95/00057 Sec. 371 Date Jan. 3, 1996 Sec. 102(e) Date Jan. 3, 1996 PCT Filed Feb. 7, 1995 PCT Pub. No. WO95/21120 PCT Pub. Date Aug. 10, 1995A sealing ring is placed in a container device which serves the purpose of distributing a liquid, e.g. draught beer, which is stored in a container under pressure of a gas, e.g. CO2. In a threaded neck ring on the container a valve is threadingly retained. The valve is a combined gas- and liquid valve with passages for gas as well as liquid. On the valve and the neck ring planar, parallel, opposite ring faces are formed between which the sealing ring. From the ring face of the valve, a cylindrical projection protrudes and extends downwards to the ring face of the neck ring. Between the valve and the neck ring there is a slot space through which an overpressure in the container can be relieved when the valve is being dismounted. The projection serves the purpose of preventing this slot space from being closed for flow of gas by some of the sealing ring which is squeezed up into the space by the gas overpressure and preventing this space from being relieved, so that an operator, when dismounting a valve is exposed to the risk of being hit by the valve, if this, by the gas overpressure, is being thrown out into the room in the very moment when the valve releases its engagement with the neck ring.
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