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Old 05-09-2017, 11:43 PM
Eric Trulson Eric Trulson is online now
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Running a torch on an oxygen concentrator

I am trying to add a propane/oxy hand torch to my shop setup (either a nortel ranger or something approximately the same size), and am currently in the process of getting a source of oxygen and all the plumbing bits and pieces.

I have an opportunity to buy a refurbished 5lpm oxygen concentrator for $250, which is the same cost as a new oxy tank and a fill. I'm leaning towards the concentrator to minimize ongoing costs.

Has anyone ever run a ranger or similar on a concentrator before? Any issues? I've seen concentrators used in flameworking setups before, but never on a bench torch with a gas-saver, so I figured I'd double check and see if there's a reason for that.
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Old 05-10-2017, 12:20 AM
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Greg Vriethoff Greg Vriethoff is offline
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Ask Jordan. He'll know.
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Old 05-10-2017, 12:22 AM
Jordan Kube Jordan Kube is offline
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You want at least a 10lpm concentrator capable of 20 psi. Available Oxygen has good concentrators. I've got three that will run a redmax and midrange no problem. I'm stepping up to a HVLP system pretty soon, I've got most of the parts on hand. Bypass the oxygen shutoff on the gassaver. Just leave the oxygen knob on the torch cracked to prevent a buildup of back pressure in the concentrator.
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Old 05-10-2017, 02:27 AM
David Hopman David Hopman is online now
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We run everything off of oxygen concentrators. It takes 2 5lpm units to run our Ranger, 3 for a really strong flame or to run the Midrange or the Red Max. One unit will be a fairly weak flame on a Ranger. I've bought most of our units off of Craigslist. I've paid between $100 to $200 for all the units I've bought. It might be worth $250 if it has really low hours on it, but maybe the units are easier to come by on the West coast.

We just scored an OGCI OG-20 unit off of Craigslist and it runs the larger torches just fine by itself.
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Old 05-10-2017, 03:45 PM
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Franklin Sankar Franklin Sankar is offline
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Approx how much should be considered low hrs?
Franklin
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Old 05-10-2017, 11:29 PM
David Hopman David Hopman is online now
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Quote:
Originally Posted by Franklin Sankar View Post
Approx how much should be considered low hrs?
Franklin
Under 10,000 hours.
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Old 05-11-2017, 08:20 AM
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Thanks
Franklin
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Old 05-11-2017, 10:43 AM
Tom Fuhrman Tom Fuhrman is offline
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as I recall, the health services companies that sell and service these didn't suggest rebuilding these until they had at least 20,000 to 24,000 hours on them and that was for use by people that require a constant flow of oxygen for health purposes and supply of good oxygen was very critical. I used to buy some from the dealers that had been used in a home where there were smokers and the units had a smoky smell to them and could not be rented out to customers who required good clean oxygen. They were very reasonable compared to some others.
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Old 05-11-2017, 05:12 PM
Eric Trulson Eric Trulson is online now
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Excellent info, thanks everybody
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Old 05-11-2017, 06:50 PM
Peter Bowles Peter Bowles is offline
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This from a thread on the ISGB...maybe useful

http://artistryinglass.on.ca/charts/...ortorches.html
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