| 摘要 |
An aeration valve for drink cans with a valve insert radially movable in an elastic bung sleeve is provided. The sleeve includes a holding mechanism and sealings. A radially movable valve insert includes a gripping part formed substantially as plate with an axial projection formed centrally thereon and a holder in which the projection engages. The projection has at least one surface which forms a channel with the inner wall of a soft part of the sleeve. The holder has at least one sealing surface which, together with the inner wall of the sleeve formed by the soft part, seals off the lateral bore against liquid, and at least one surface which forms a channel with the inner wall of the soft part of the sleeve. The plate of the gripping part has recesses which, with the surface of the outer flange, form a channel running parallel thereto. The plate of the gripping part may include a cam formed on the lower side which engages in a recess in the outer flange. A bottom plate is formed on a hard part of the sleeve and may have predetermined breaking points to facilitate insertion of a tapping pipe.
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