On Friday, November 6, 2015 at 11:35:49 AM UTC-6, wrote:
Mark, please stop shouting. I am trying to learn how these systems are designed.

What you originally said was that you were looking for a cheap alternative to an actual piece of aircraft life support equipment, based on medical discards.

I'm surprised everyone who has answered you HASN'T DONE IT IN ALL CAPS!!!!

So - the answer to your original post is: DON'T EVEN GO THERE, GET A REAL AIRCRAFT O2 SYSTEM!

If price is so important, check out the XCR system (http://www.craggyaero.com/xcr_systems1.htm) or look around for a used system.

Sometimes, it takes people shouting at someone to keep them from doing something really stupid. BTDT!

Cheers,

Kirk
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