| 摘要 |
The present invention relates to a tight-seal valve for compressed or liquefied gas bottles. This valve is characterised in that it comprises a sealing ring 21 surrounding the tail 3 of the body 2, this ring 21 having a threaded inner part 22 which is screwed onto a threading provided on a cylindrical part 23 of the body 2; the ring 21 has, in its lower front face, a transverse annular groove in which there is housed a toric gasket 24, and the ring 21 furthermore also has, in the upper part of its inner wall, a transverse annular groove in which there is housed another gasket 25 which is applied against a cylindrical part 26, having the same diameter, of the body 2. <IMAGE>
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