Noun
rebreather (plural rebreathers)
(underwater diving) A breathing apparatus that recycles expelled air, removing carbon dioxide and thus allowing extended use of a supply of air.
After that, the world's armed forces had less reason to requisition rebreather patents submitted by civilians, and sport diving automatic and semi-automatic mixture rebreathers start to appear. Source: Internet
Closed circuit rebreathers An oxygen rebreather diver or a fully closed circuit rebreather diver consumes about 1 litre of oxygen per minute. Source: Internet
The rebreather therefore recycles the exhaled oxygen, while constantly replenishing it from the supply so that the oxygen level does not get depleted. Source: Internet
There are two main variants of rebreather semi-closed circuit rebreathers, and fully closed circuit rebreathers, which include the subvariant of oxygen rebreathers. Source: Internet
Rebreathers An Inspiration rebreather seen from the front main A rebreather recirculates the breathing gas already used by the diver after replacing oxygen used by the diver and removing the carbon dioxide metabolic product. Source: Internet
See "rebreather history" link below. Source: Internet