Principles Of Operation

The U.S. Navy closed-circuit mixed-gas UBA is a constant partial-pressure-of-oxygen rebreather. To conserve the gas supply and extend underwater duration, the efficiency of gas use is improved by:

Removing carbon dioxide produced by metabolic action of the body. Adding pure oxygen to the breathing gas to replace the oxygen consumed. Recirculating the breathing gas for reuse.

Figure 17-1. MK 16

MOD 0 Closed-Circuit Mixed-Gas UBA.

Figure 17-1. MK 16

MOD 0 Closed-Circuit Mixed-Gas UBA.

EXHALATION M0UTHPIECE

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