victorzamora
Contributor
I cringe every time this is mentioned.....and breathing off the inflator..........popcorn.
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Breathing off of the inflator is a piece of cake....seriously. Breathing from the BCD is gross, but if you time your buttons right you get almost 100% fresh scuba-tank air. I've even held the BCD above me (inflator at lowest point) to exacerbate that.
However, I did it as a gag and because someone bet that I couldn't. I do it now every once in a while for fun, or to prove to people that diving is easy when you practice the essentials.....easy to the point that you can start doing stupid stuff like inflator-breathing.
---------- Post added November 6th, 2014 at 10:49 AM ----------
The only scenario I can envision is a diver very low on air, lost within a wreck who is passed a full cylinder through an opening. Breathing directly off the tank he can gain time to switch his equipment over to the full tank.
Hahaha, what a douchebag that rescuer is! "Here, I went to get you a new tank so you could live......but I didn't put a reg on it because you don't deserve another reg. You have to bare-tank breathe, in an already-panicked state (presumably) and then fiddle with your own gear in the short time you have between breaths (because it's so hard to get a good one). Good luck."