I have a portable O2 system with CGA-540 fittings. I've read here & elsewhere that I will need to carry along one or more adapters for filling at FBOs while traveling. So far I've only filled at home, so I have no experience with typical FBO fill fittings.
Which adapter(s) should I carry to provide a reasonable assurance of compatibility?
Also, what sources do you recommend for these adapters, or the fittings to make my own, at less-than-aviation prices? I found my CGA-540 transfiller on eBay for significantly less than the aviation O2 suppliers. I'm also looking for fittings to assemble a CGA-540 supply cylinder intercoupling to cascade a second cylinder to my supply setup.
Thanks!
Which adapter(s) should I carry to provide a reasonable assurance of compatibility?
Also, what sources do you recommend for these adapters, or the fittings to make my own, at less-than-aviation prices? I found my CGA-540 transfiller on eBay for significantly less than the aviation O2 suppliers. I'm also looking for fittings to assemble a CGA-540 supply cylinder intercoupling to cascade a second cylinder to my supply setup.
Thanks!