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O2 Cannuals and flow meters
The Nelson system and I am sure the Sky Ox use the same cannula system. You save a lot of O2 using them. However the key is the type of flow meter you have.
I purchased flow meters with my system that will go to FL250. However, once your above 180FL the cannulas are no longer useable. They supply you with plastic masks to use at that level. The masks cannot be used if you have a thick beard or anything that would cause a leak. If you have a thick beard, then you will have to purchase the more expensive rubber mask. Without the mike built in they are not to expensive. With the mike, it is about 400.00.
My tank is very light and easy to use. Put the cannula on, plug the other end into the tank (snaps in) and turn on the valve, adjust the flow meter to your altitude by turning a vlave and watching the FL ball go to the altitude you choose.
John
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