| 摘要 |
The present invention relates to a one-piece valve device (10) made of elastic material, separating two distinct volume spaces, said device comprising: a) a substantially cylindrical body (12) having a through-channel; b) a flap (14) closing the aperture of the through-channel of said body (12), when the device (10) is in the closed position, said flap (14) being positioned within the interior space of said body (12); and c) an arm (16) connecting the body (12) of said device to the flap (14), said arm (16) being in an elastically loaded position regardless of the position of said flap (14). |
