| 摘要 |
A mouthpiece for underwater breathing pipes, including on its upper part a mouth element and on its lower part at least one water draining valve with a certain downward slope as to a lying plane including the mouth element. Said mouthpiece includes at least two opposite side parts, hollow and provided with the means allowing to connect, removably and watertight, to a side part a breathing pipe, and to the opposite side part a closing plug; said means allow a total interchangeability of the positioning of the breathing pipe and the closing plug to the right and/or to the left as to the mouthpiece mouth element and water draining valve.
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