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How to empty a fire extinguisher to use as an air tank.

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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How to empty a fire extinguisher to use as an air tank.

Unread postAuthor: 8tonsemi » Sun Sep 23, 2012 6:20 pm

I bought a ABC fire extinguisher to use as an air tank and I was wondering how do you go about emptying and cleaning those things before getting them welded.
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Unread postAuthor: mattyzip77 » Sun Sep 23, 2012 6:33 pm

Really???? Pull the pin, spray, unscrew valve, remove valve, rinse out, let dry. :idea:
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Unread postAuthor: 8tonsemi » Sun Sep 23, 2012 6:36 pm

rinsing wont rust the heck out of it?
Plus i heard the chemicals are bad for you in them?
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Unread postAuthor: Zeus » Sun Sep 23, 2012 6:42 pm

Discharge it into a garbage bag. Then what Matty said. Don't forget to paint the tank.
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Unread postAuthor: 8tonsemi » Sun Sep 23, 2012 6:59 pm

With non rust paint?
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Unread postAuthor: Technician1002 » Sun Sep 23, 2012 11:27 pm

The chemical in many can be recycled. Take it to the local fire extinguisher service place. They would love the free chem. They may even have several obsolete unservicable tanks in the metal recycle bin. Ask for a trade.

Most ABC type dry chem have a combination of Bicarb of Soda, Potassium Carbonate (Purple K) or other custom blend to prevent caking of the powder.
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Unread postAuthor: mattyzip77 » Mon Sep 24, 2012 7:57 am

8tonsemi wrote:With non rust paint?


yes, rustolium Hovever my spelling is prolly wrong....
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Unread postAuthor: 8tonsemi » Mon Sep 24, 2012 8:06 am

How much do you think I'll need I bought a 5lb fire extinguisher?
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Unread postAuthor: 8tonsemi » Mon Sep 24, 2012 8:06 am

sorry computer double post.
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Unread postAuthor: mattyzip77 » Mon Sep 24, 2012 12:05 pm

one can is more than plenty.....
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Unread postAuthor: D_Hall » Mon Sep 24, 2012 7:48 pm

Technician1002 wrote:Most ABC type dry chem have a combination of Bicarb of Soda, Potassium Carbonate (Purple K) or other custom blend to prevent caking of the powder.


Just a note, but PKP (Purple K) isn't exactly good for you. It's not toxic per se, but the particle size is EXTREMELY small and your body has a tough time expelling it from your lungs. So avoid breathing the stuff in.
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Unread postAuthor: jsefcik » Mon Sep 24, 2012 9:33 pm

just hold it on one hand and drill a hole in the bottom with other hand and hold on tight!!!!!
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