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Disposable Gas Bottles

How to dispose of gas bottles ?

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Nicholas Farr17/01/2021 16:00:16
2625 forum posts
1225 photos

Hi, I have a 60L one that states the pressure at 60Bar at 60 C. Testing pressure PH 165, I doubt many home compressors will reach very near that pressure and I have welded a BSP socket onto a couple in the past to get a little extra reserve pressure for a paint spray gun which have had 160 PSI in them without any problems. But of course we do these things off our own bat as long as no one else is put in danger.


Regards Nick.

SillyOldDuffer17/01/2021 17:16:14
6878 forum posts
1539 photos
Posted by Georgineer on 17/01/2021 15:30:22:

Sort-of relevant to the thread: I have an argon/CO2 bottle with my MIG set and it says "Do not let the contents escape into the atmosphere" or words to that effect (I can't check it at present).

Given that the gas was obtained from the atmosphere in the first place, what's that all about?

George B.

NDIY mentioned the effects of breathing it, which in volume could be nasty. A lungful of 14% Carbon Dioxide would disrupt the breathing reflex and Argon is a suffocating gas - no oxygen. Knocking the top off would cause the cylinder to fly about, and rapid release of gas causes a strong freezing effect. I suppose you could lose all your teeth, choke, and have frost-bitten lungs!

Not very likely a little bottle would do all that but I guess the sellers want to be sure they don't get sued.


Maurice Taylor17/01/2021 17:38:57
176 forum posts
30 photos
Posted by not done it yet on 17/01/2021 14:33:35:

Anyone know the pressure at which compression fittings are no longer deemed safe? I’ve seen them fitted on vehicle hydraulic braking systems before now, but I would only use the proper flared pipe fittings in such an application.

Hi,I remember compression fittings being used on hydraulics down the pit .I used to fit them on 50mm steel pipes that carried soluble oil mixed with water at a pressure of 4000psi and 200gpm.They were often a mile in length.


Roger Best17/01/2021 19:12:36
216 forum posts
31 photos

Great thread, I remember bing in this situation, those little cylinders don't last long.

Two solutions:

Firstly as stated above, cut them up, and chuck them in the general metal scrap bin at the tip if you insist they are not useful steel.

Second solution to further issues, get a gassless MIG. Amazing machines, far easier to use. The mess I make is no worse than the mess I made with a normal MIG. wink

Georgineer17/01/2021 23:31:30
490 forum posts
30 photos

Nick's bottle says "Store in a well-ventilated place" and "Ventilate the area in case of leaks", which both make sense.

However, it also says "Do not allow bottle contents to leak into the atmosphere" in the Instructions for Use. We're obviously not talking flying bottles or huge build-ups here. I'm still as puzzled as I was why they use that wording.

George B.

Nicholas Farr18/01/2021 00:01:58
2625 forum posts
1225 photos

Hi, as GeorgeB says, it is puzzling, the very intended use allows it back into the atmosphere. However both Argon and CO2 are heavier than Air, so in a small unventilated space, it can build up to an unbreathable atmosphere especially if you get through two or three of them in a short period of time.

Regards Nick.

Edited By Nicholas Farr on 18/01/2021 00:02:28

John Olsen18/01/2021 09:56:52
1147 forum posts
92 photos
1 articles

I've made a small disposable argon bottle into a piggy bank. Not such a useful thing now that nobody uses cash anymore!


V8Eng18/01/2021 10:35:37
1527 forum posts
30 photos

Edited By V8Eng on 18/01/2021 10:36:09

Edited By V8Eng on 18/01/2021 10:37:04

Peter Sansom18/01/2021 12:11:03
85 forum posts
2 photos

I know of a case when the valve was broken off the top of an G size, large, Oxygen bottle. Took off like a rocket. Fortunately no one was injured.

A quick search with google will show LP Gas cylinders repurposed as stoves. The original Ozpigs were converted gas cylinders. Do so with caution if you convert one.

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