| 摘要 |
Sophisticated unit 10 for vapour distribution, in particular for espresso coffee machines, characterised in that it can be linked to the atmosphere by means of a unidirectional valve 23, placed in the vicinity of the end of the pipe 14 which is opposite the vapour reversal end, by virtue of which, when the steam supply is interrupted, atmospheric pressure is immediately restored with pipe 14, which prevents the vaporised liquid from being sucked up again: "This arrangement prevents a quantity of vaporised liquid from being resucked back along the pipe". <IMAGE>
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