> > >Graeme wrote > , > I was faced with the same problem when I bought a small Aeromedix > portable system because our club ships weren't fitted for oxygen. BOC > and Liqidaire won't fill cylinders that aren't theirs. I came across > this link - http://www.avweb.com/news/columns/182079-1.html - and now > fill my bottle from my welding cylinder. As the article points out, > welding oxygen has the same moisture content as medical breathing oxygen > and comes out of the same tank. Any ice formation is probably coming > from unpurged air in the transfilling line. I've had no problems but > have yet to try it over 15000 ft. > Cheers > Graeme
Good web site Graeme, worth reading. My welding supplier rep mentioned 2 things worth considering and as I did not see them raised on the web site, thought I would pass them on for your consideration. 1) reputable suppliers evacuate medical and aviation cylinders before re-filling .... but not industrial cylinders 2) medical/aviation cylinders are made from non-corrosive cylinders with stainless fittings. There is a remote possibility if re-filling from an older steel oxygen cylinder of importing foreign matter into your system But ABC (always be careful) because oxygen (and I have been using it industrially for 45 years) is the most dangerous of all gasses to work with. I have witnessed a number of serious accidents with this odourless, colourless but re-active to oils and greases gas. Cheers and safe flying to all over chrissy/new year break. Regards Brian _______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring
