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Pressure in a 1lb Oxy cylinder

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Pressure in a 1lb Oxy cylinder

Unread postAuthor: jor2daje » Sat Sep 12, 2009 10:37 pm

At my hardware store I've seen red bottles of oxygen and was wondering what the pressure inside them might be. If it is considerably higher than propane I may consider buying for when I want to do serious damage with my semi gun I'm woriking on. Thanks.
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Unread postAuthor: inonickname » Sat Sep 12, 2009 10:47 pm

Don't. If it's the disposable tanks then they're probably lower pressure than the black steel cylinders.

Using oxygen is a bad idea. Heavier weight, slower speed of sound etc. It will rust any steel parts out and combust with any oils, lubricants etc.

Just don't use it, full stop.
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Unread postAuthor: jor2daje » Sat Sep 12, 2009 11:11 pm

Alright thanks inonickname, Ill stick to propane and hpa.
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Unread postAuthor: Moonbogg » Sat Sep 12, 2009 11:47 pm

500psi. So the pressure is decent, but it might be inneficient to use and prove costly.
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Unread postAuthor: hi » Sat Sep 12, 2009 11:53 pm

Not to mention that they are left handed threads...
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Unread postAuthor: Moonbogg » Sat Sep 12, 2009 11:58 pm

hi wrote:Not to mention that they are left handed threads...


Yeah that to. Finding a valve to work and allow you to get all the pressure might be hard. The most common is the welding valve thats made for it and its actually regulated to very low pressures.
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Unread postAuthor: jackssmirkingrevenge » Sun Sep 13, 2009 4:09 am

A good reason to NEVER use oxygen in a pneumatic:

left side

right side
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Unread postAuthor: Moonbogg » Sun Sep 13, 2009 6:13 am

jackssmirkingrevenge wrote:A good reason to NEVER use oxygen in a pneumatic:

left side

right side


What the HELL happened to that thing?
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Unread postAuthor: jackssmirkingrevenge » Sun Sep 13, 2009 6:35 am

It looked like this until the (lucky to be alive) owner filled it with oxygen instead of compressed air.
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Unread postAuthor: Moonbogg » Sun Sep 13, 2009 8:18 am

jackssmirkingrevenge wrote:It looked like this until the (lucky to be alive) owner filled it with oxygen instead of compressed air.


Rapid MFR...Damn that was an expensive mistake. I wonder how it happened? Oxygen isn't flammable, so perhaps it corroded the gun and it failed under the extreme pressure?
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Unread postAuthor: Ragnarok » Sun Sep 13, 2009 9:10 am

Moonbogg wrote:I wonder how it happened? Oxygen isn't flammable, so perhaps it corroded the gun and it failed under the extreme pressure?

Oxygen isn't flammable - but in such a dramatically oxygen enriched environment, the tank itself is.

At nearly a thousand times the normal concentration of oxygen, one spark from the hammer valve, and you've got ground zero.
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Unread postAuthor: Moonbogg » Sun Sep 13, 2009 11:32 am

Ragnarok wrote:
Moonbogg wrote:I wonder how it happened? Oxygen isn't flammable, so perhaps it corroded the gun and it failed under the extreme pressure?

Oxygen isn't flammable - but in such a dramatically oxygen enriched environment, the tank itself is.

At nearly a thousand times the normal concentration of oxygen, one spark from the hammer valve, and you've got ground zero.


Oh, so this was due to the high pressure of the oxygen I take it. Those guns operate at 200bar.
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Unread postAuthor: Technician1002 » Sun Sep 13, 2009 1:48 pm

Moonbogg wrote:
jackssmirkingrevenge wrote:It looked like this until the (lucky to be alive) owner filled it with oxygen instead of compressed air.


Rapid MFR...Damn that was an expensive mistake. I wonder how it happened? Oxygen isn't flammable, so perhaps it corroded the gun and it failed under the extreme pressure?


I took a safety class on handling oxygen. A high oxygen atmosphere lowers the ignition temperature of many items including autoignition and many flammable items become explosive, including oil.

The oil caught explosively. The use no oil printed on regulators and gauges for oxygen use are for this reason. It is well known that a drop of oil on the high pressure threads of an oxygen regulator will explode when the oxygen cylinder is turned on.

http://www.weldingtipsandtricks.com/cutting-torch-2.html
http://www.youtube.com/watch?v=9k3IYniHaKM
http://www.teachertube.com/viewVideo.php?video_id=61676
Wait for the oxygen section.
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Unread postAuthor: jackssmirkingrevenge » Sun Sep 13, 2009 11:16 pm

Moonbogg wrote:Oh, so this was due to the high pressure of the oxygen I take it. Those guns operate at 200bar.


As Tech pointed out above, it was less to do with the high pressure and more to do with the fact that in an oxygen rich environment, any solvents present in the firing mechanism of the airgun would have become highly explosive, it's an accident waiting to happen.
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Unread postAuthor: Moonbogg » Sun Sep 13, 2009 11:27 pm

jackssmirkingrevenge wrote:
Moonbogg wrote:Oh, so this was due to the high pressure of the oxygen I take it. Those guns operate at 200bar.


As Tech pointed out above, it was less to do with the high pressure and more to do with the fact that in an oxygen rich environment, any solvents present in the firing mechanism of the airgun would have become highly explosive, it's an accident waiting to happen.


Maybe i'll use a bit of oil instead of MAPP gas. Looks promising.
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