I'd like to hear from anyone who has used the EasyPulse 5 while flying,
and can confirm whether it works at 12K-18K altitudes. Trying to put
together a good but low-buck oxygen system.

I use a Nelson (Precise Flow) demand regulator, with their special
cannula, and it works very well. Tested to FL160.

I've had my Precise Flight demand valve oxygen regulator to 17,500 ft
with the cannulas and they worked fine.
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Ken Reed
M20M, N9124X

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Ken Reed
M20M, N9124X