| 摘要 |
<p>Regulator for underwater breathing devices including a relatively hard material box-like body (1) having a pipe (2) for the connection with a mouthpiece, at least one air inlet duct (3) and at least one opening (4) on which it is positioned one air exhaust valve (6); in said regulator the box-like body (1) is externally covered by at least one layer (9) of a suitably shaped relatively soft material.</p> |
