On Jul 12, 7:51*pm, ContestID67 wrote:
Go to your local welding supplier. *The oxygen is just the same as you
get from an FBO and a fraction of the price.

Andy

I don't believe that it can be welders oxygen. *It can't even be
medical oxygen. *It must be "Gaseous aviator’s breathing" (AVB)
oxygen. *I read it has to do with the moisture content to prevent
freezing. *True?

It there an FAA regulation on this? *I can't find it.

Some info herehttp://www.faa.gov/pilots/safety/pilotsafetybrochures/media/Oxygen_Eq....

go to this link for info about O2

http://www.mhoxygen.com/attachments/...nformation.pdf

I provide O2 service for our towing operation at Montague. I purchase
large bottles from a gas distributor, (who is also a welding gas and
other gas distributor),

The O2 is the same, ie comes out of the same source except

Medical O2 requires a prescription, bottle is labeled Medical O2
Welding O2
Aviation O2 bottle is green and labeled ABO Aviators Breathing
Oxygen.

There is absolutely no difference in the product inside the bottle.

Richard
www.craggyaero.com