| 摘要 |
<p>A valve for underwater aqualung supplying devices, including a pressure chamber and a watertight compensation chamber adjacent and watertightly separated by a partition wall. A shutter including a tubular stem inserted, at least in part, inside each chamber. The pressure chamber connected to a pressurized gas source and a housing suitable for cooperating with an end connected with the shutter. The compensation chamber is provided with at least one opening communicating with the outside and a stem end in the shape of an expansion enlarged head connected with the valve outlet. A coil spring is watertightly driven into the chamber between the expansion head and the partition wall. In the valve the enlarged expansion head of the shutter is encircled by a thermal insulating annular part watertightly positioned between the head and the side wall of the compensation chamber.</p> |
