| 摘要 |
The actual stopper 1, fitting to the edge 15 of the orifice 6 of a container 7, comprises a ceiling 16 pierced with a gas escape hole 17, and a skirt 13, 14. A valve body 2, clipped into a section 14 of the skirt, has a base 19 pierced with at least one gas escape hole 22. In the chamber 25, delimited by the body 2 and the ceiling 16, there is housed a valve 3 which can be pressed against the base 19 or separated from this base depending on the pressure existing inside the container 7. Application to drums or other containers receiving "turbulent" liquids. <IMAGE>
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