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I'd worry more about the purity guarantee...as far as I know, from the limited checking I did before I committed to Aviators....it has something to do with the number of times the cylinder is vacuumed out before they refill it. Welding O2 from what I was told, it not vacuumed out, just refilled. The Aviators and the Medical are pumped out and flushed before they are refilled. It might have been a bullshit story...but that is what I made my choice on... Also aviators is supposedly dried so it won't freeze in a high altitude use. I'm sure there are others on the list who are more knowledgeable... Sean Cary ----- Original Message ----- From: p k <abyss30@ho*.co*> To: <techdiver@aquanaut.com> Sent: Saturday, November 27, 1999 8:05 PM Subject: Isn't oxygen, oxygen? > This question has plagued me for a while. > What is the difference between breathing oxygen and welding oxygen? > > First,I was told that welding O2 had more hydrocarbons contained in > it, BUT isn't the explosion/fire risk the same? How many auto mechanics wash > and dry there hands before changing a regulator on an > oxy-acetylene torch? The second thing I was told is "there is possibly a > higher moisture content", to me that doesn't hold up either because oxygen > (commercial grade) will always come in a steel cylinder, if there is any > moisture in there it will rust and pretty quickly I might add. So what's the > deal? Anybody? > > ______________________________________________________ > Get Your Private, Free Email at http://www.hotmail.com > -- > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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