| 摘要 |
A valve (1) for swimming and diving respirator (2), said valve comprising a chamber (4), connected by means of a duct (5) to an interface device with the user's breathing tract, provided with a breathing opening (6), in contact with the outside environment, oriented, during use, upward and in a direction opposite to the water surface, and with a movable sealed wall (7), opposite to said breathing opening (6), responsive to the hydrostatic pressure differential between the opened side of the breathing opening and the external side of the same wall (7) of said chamber (4). |
