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Unread 07-14-2007, 09:05 AM   #1
CJATE
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CO2 OBA from fire extinguisher,

At work, I come across fire extinguishers all the time, they are aluminum so we usually recycle them.

Never thought about making an OBA tank until I saw the keg thread, and did not want to hijack it.

Possible? I got a big one at the office, I was going to recharge as an extinguisher, but would rather have OBA.

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Unread 07-14-2007, 09:25 AM   #2
Happy Joe
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Most extinguishers are powder not CO2 (powder extinguisher tanks are too weak to safely support CO2 pressures, but will be OK for use as an OBA compressor surge tank at pressures near 100 PSI).
If you have a CO2 extinguisher its possible but it depends on the threads on the tank. Some extinguishers use a non standard thread.
I would ask the guy at the gas distributor if they can sell you a valve and if it will fit. (also if they would be willing to fill it after the conversion) (you will almost certainly have to repaint it and have it pressure tested)
Enjoy!
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Unread 07-14-2007, 09:50 AM   #3
schitzangiggles
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I have 2 CO2 extinguishers here are what they look like:

http://www.smokesign.com/cardioxfirex.html



CJATE you will be fine using it as OBA, you need to get the right valve body to make sure the Highflow when filling you tires and the PSI are reduced to a managable level and to hook up your air line to. IIRC Power tanks got their start by using "old" fire extinguishers that were recertified, fitted with acutriments, painted and sold.
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Last edited by schitzangiggles; 07-21-2007 at 02:08 AM..
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Unread 07-14-2007, 03:21 PM   #4
1984CJ
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You should not try and use a Dry chemical fire extinguisher tank for a CO2 onboard air system. From what I found Dry chemical tanks are only rated for a working pressure of ~200 psi.

CO2 Fire extinguishers are rated much higher with a working pressure of 850PSI. Hydro tests on the bottles are generally run at 5/3 that pressure or ~1417psi.
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Unread 07-14-2007, 08:47 PM   #5
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Schitzangiggles; you did not read my post. Try again!
Enjoy!
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Unread 07-15-2007, 09:27 AM   #6
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I have a pressurized water fire extinguisher rated up to 180 psi. Would this work? My only concern is how to mount it.
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Unread 07-15-2007, 12:31 PM   #7
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It will work as a compressor surge tank, it will not hold liquid CO2 pressure (as mentioned liquid CO2 needs a high pressure tank, or CO2 extinguisher tank).
The water extinguishers are the ultimate squirt guns though.
Enjoy!
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Unread 07-15-2007, 07:08 PM   #8
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I should have been more clear...I'm not planning on using CO2. I'm using air from my stock AC compressor. Will the extinguisher work?
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Unread 07-15-2007, 09:31 PM   #9
deathblade556
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Sure a fire extinguisher would work as a tank for our AC/air compressor just make sure you have a safety valve and a pressure switch to cut the compressor out when the PSI gets higher 110-120psi. This is what I'm planning to use with my OBA setup, the hardest part is finding the right fittings/threads.
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Unread 07-16-2007, 02:57 PM   #10
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Quote:
Originally Posted by CJATE
At work, I come across fire extinguishers all the time, they are aluminum so we usually recycle them.

Never thought about making an OBA tank until I saw the keg thread, and did not want to hijack it.

Possible? I got a big one at the office, I was going to recharge as an extinguisher, but would rather have OBA.
I'll trade you a Scotts air tank rated up to like 3000 psi for the CO2 tank Same size a 10 lb CO2 Fire Extinguisher.
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Unread 07-21-2007, 02:09 AM   #11
schitzangiggles
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Quote:
Originally Posted by Happy Joe
Schitzangiggles; you did not read my post. Try again!
Enjoy!
You are correct. I am retarded my applogies sir
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FLynes



If you love wealth more than liberty,the tranquility of servitude more than the animating contest of freedom, go home from us in peace. We seek not your counsel nor your arms. Crouch down and lick the hand that feeds you. May your chains sit lightly on your shoulders and may posterity forget that you were our countrymen.
-Samual Adams

A government big enough to give you everything you want is big enough to take everything you have.
Thomas Jefferson

Calling Illegal Aliens "Undocumented Immigrants" is like calling drug dealers "Unlicensed Pharmacists"

Nemo Me Impune Lacessit
"No one provokes (attacks) me with impunity".


"Your right, the Tea Party and the OWS are the same, just like the America Revolution and the French Revolution were the same. The only problem is the American Revolution ended with Liberty, Freedom, Justice for all and a shining light upon a hill. The French Revolution ended with lynchings, guillotines, murder and socialism. So yeah, I could see how one could confuse the two..."

Mac Wilson
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