| 摘要 |
A fitting for providing a connection between a tank of compressed gas and a diving mask including a body provided with an arm arranged to loosely embrace the outlet valve of the tank of compressed air. A piston is slidably mounted with respect to the bore and includes an inlet disposed to register with the outlet valve of the compressed air tank and an outlet adapted for connection to the diving mask. A filter is disposed within the inlet. A spring urges the piston and the body toward a position in which the arm clamps about the outlet valve of the compressed air tank and the inlet of the piston receives air from the outlet valve. A passage bypassing the filter and connected with the inlet directs air to an area of the piston to aid the spring in producing a tight engagement between the inlet provided in the piston and the outlet valve.
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