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Old 11-27-2019, 07:19 AM
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Franklin Sankar Franklin Sankar is offline
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Concentrator pressure relief valve

Does anyone know if the oxygen concentrator have a pressure relief valve so if I shut off the torch the pressure is released. Ie no back pressure.
Franklin
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Old 11-27-2019, 11:10 AM
Shawn Everette Shawn Everette is online now
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Generically it should do it on it's own. It isn't really much of a compressor, so it doesn't actually store anything thing in the unit and will continue to run. There shouldn't be enough back pressure to cause harm, but you're losing time from it's life span.
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Old 11-27-2019, 01:10 PM
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Shutting of the flow from a concentrator will cause an alarm to sound. Don't know if it will harm the compressor but the alarm certainly is annoying. I just left my O2 valve open. Was using a surface mix torch so no real problem doing that.
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Old 11-28-2019, 08:54 AM
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I was thinking about if you want to adjust the oxygen you have to throttle it back .
Do you ever have to throttle back the oxygen other than at start up. What pressure do you use on your torch? At 20 psi the torch screams.
Anyone knows what pressure this torch works with? I got it a while ago . It roars like a lion. It also sings.
Franklin
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Old 11-28-2019, 08:59 AM
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Shaun I am afraid to ask but any guess on how bad the wear will be. If itís slow then that is good.
Franklin
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Old 11-28-2019, 10:23 AM
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Insert a T in the line with a valve to blow it off if you are worried. I always let mine escape because I have an old Nortel Major / Minor burner with two torch heads.
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Old 11-28-2019, 12:16 PM
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Thanks. That is the problem with my torch. The one lever turns on either the rings or the center . I am not sure I can turn on both at the same time. I will put a pressure relief valve if there is none. Arggg now to find one. Or maybe a bleed valve.
Franklin
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Old 12-01-2019, 03:42 AM
David Hopman David Hopman is offline
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Just leave the oxygen on the torch open all the time so the concentrators do not ever have back pressure. It can ruin them.
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Old 12-01-2019, 05:27 AM
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Thanks. How about if I add a bleed off valve, fully open the oxygen on the torch .
Then use the bleed off valve to control the oxygen flow. Open the bleed reduce the flow to the torch.
Franklin

Last edited by Franklin Sankar; 12-01-2019 at 07:59 AM.
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Old 12-01-2019, 08:28 PM
Michael Ahlefeldt-Laurvig Michael Ahlefeldt-Laurvig is offline
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I dont know the first thing about oxygen concentrators or torches, but would it be possible to run the eccess into a cheap say plastic pool for kids, and then throw a tire or something on it to press it out?
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Old 12-05-2019, 04:09 AM
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I do all of the torch adjustment with the propane, not the oxygen. It is pretty much wide open all the time. The wife does something similar on her lampworking torch, and only turns down the oxygen when she needs a really fine flame, but she opens the outer ring oxygen to prevent back pressure. She is doing huge 104 lampworked focal beads that take up to 2 hours and is using a OGSI 20 unit.
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Old 12-06-2019, 09:42 PM
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How do you light it with the oxygen wide open. Does it pop back. I get a big flame with the oxy wide open. Great for big things.
Franklin
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Old 12-09-2019, 03:49 AM
David Hopman David Hopman is offline
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No pop at all. Just barely crack the propane and light it, then adjust the propane.
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Old 12-09-2019, 10:00 AM
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Quote:
Originally Posted by Michael Ahlefeldt-Laurvig View Post
I dont know the first thing about oxygen concentrators or torches, but would it be possible to run the eccess into a cheap say plastic pool for kids, and then throw a tire or something on it to press it out?
****
That sounds to me like an extreme fire hazard.
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Old 12-09-2019, 05:35 PM
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Quote:
Originally Posted by Pete VanderLaan View Post
****
That sounds to me like an extreme fire hazard.
Yes but oxygen isnít flammable. Yes I know unsafe storage.


People commonly use oil less compressors matched to the bunch of concentrator total output for low pressure high volume systems. Just up to a few hundred psi so no chance of friction caused fires in the presence of oil. The bigger the tank the better new propane tanks or new air compressor tanks seem to be a good choice. Iíve seen some really scary oxygen containment systems.
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Old 12-09-2019, 08:04 PM
Michael Ahlefeldt-Laurvig Michael Ahlefeldt-Laurvig is offline
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Yea your right Pete, Ive only had high pressure bottle as in welding bottles, as I said no experience in torches or concentrators. Just thinking aloud
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Old 12-10-2019, 11:49 AM
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Quote:
Originally Posted by Sky Campbell View Post
Yes but oxygen isn’t flammable. Yes I know unsafe storage.

****
I used to be in the business of responding to bad thinking and supressing the results of it. Oxygen doesn't burn by itself but it promotes ignition sources and vigourously supports combustion. Ask the Apollo astronauts that died in their capsule. The reasons why nitrates are clearly marked "Oxidizers" and have restricted storage and shipping requirements are clear. The limits of what can be stored on your site are clear. Oxygen is sticky stuff. It clings to clothing, drapes, chairs and it just needs a spark.
If you know about unsafe storage yet still do it, you just haven't experienced it firsthand yet.
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Old 12-10-2019, 01:39 PM
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Knowing unsafe storage and actually doing it are two different things. I like to keep my oxygen in a liquid state as much as possible in a approved and certified dewar.

One of the first high volume low pressure oxygen systems was pioneered by a lamp worker. The one I saw was built storing oxygen in a non aproved bladder and compressing the bladder for pressure. This experiment pushed the idea forward and has been reengineered by many. Everything starts somewhere.

And oh yes I have seen what oxygen can do in saturation. Scary stuff. My best advise is to understand your freedom stops when it infringes on someone elseís. This means not putting firefighters or neighbors at risk.

I would like to see cost analysis of feeding pure oxygen into the fuel stream on the glory. These 5 and 10 liter machines use hardly any power and can be found for free all over the states.
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Old 12-10-2019, 03:11 PM
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Knowing and doing..

I recall where the reality show "Forged in Fire" had someone watching it who managed to burn down his city block in New York having been inspired by the show, so I have a tendency to consider the lower common denominators on the board of which tons are simply lurking. I try not to take quite a few things for granted.
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