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4th Jul 2020, 08:34 PM #1Member
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What use for an old Aluminium Scuba tank?
Hi, I have an old scuba tank which has been out of test for decades and it is still 3/4 full of air, 175Bar or 2550PSI, if my gauge is correct, and wondering what to do with it. I was thinking of selling it for maybe $60? as some one have a use for the compressed air in it, and afterwards they can sell it for the scrap value, or empty it myself and sell it for scrap, it could probably pass a test but the tests are about $60 bucks anyway and then try to sell it but probably too much mucking about for not much gain.
Alternatively anyone have any suggestions on what to do with a thick walled aluminium tube, any ideas??
Cheers
Ed.
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4th Jul 2020, 09:26 PM #2Most Valued Member
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Whether it's legal to do or not, I don't know, but set it up for pumping up a tyre, and carry it in the boot, for when/if you get a flat tyre. RESTRAINED of course.
Or use it as a portable compressed air tank, should be good for blowing something off.
KrynTo grow old is mandatory, growing up is optional.
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5th Jul 2020, 06:40 AM #3Member
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5th Jul 2020, 12:06 PM #4Senior Member
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If its a old tank they may not recertify it so it can be filled. Early alloy tanks were made from aluminium with iron added for some reason. Nowadays they dont feel they are same to fill because of risk of internal corosion.
I had 2 tanks that had to scrap because of this. HSE SAFETY WARNING FOR OLD ALUMINIUM TANKS - DIVE Magazine
On other hand Google scuba tank garden art..
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5th Jul 2020, 05:13 PM #5
I was going to say... 19KG for a cylinder of 11.3Litres Water capacity... seems about 2x heavier than it should be for Aluminium.
Equivalent industrial cylinder of that WC good for 200Bar is about 10kg.
Under-tray air compressor tank for Air lockers or tyre inflation would be the way I'd try sell it.
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5th Jul 2020, 05:43 PM #6Member
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Sparksy, I just placed a big neodymium magnet over it and it didn't stick, if it was or had some steel in it I would have had to yank it off.
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5th Jul 2020, 11:25 PM #7Golden Member
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Somebody who shoots big bore PCP air rifle would give you a few dollars for it
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6th Jul 2020, 10:30 AM #8Most Valued Member
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I have adapted mine to use as a tyre inflator in an emergency. If I should happen to roll a tyre off the bead a quick inflate at 300 psi pushes it back on...yes I know the trick about butane etc
Some one at a pistol club might appreciate it for filling their air pistol/rifle
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6th Jul 2020, 01:22 PM #9Senior Member
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Dont worry. They will let you know when you get it recertified. Has to be tested before anyone will fill it.
Like I said they wouldn't test it because of its age.
"Manufacturers highlighted by the HSE as having used the HE30/AA6082 and AA6351 alloys in SCUBA tank construction are as follows:
- Luxfer Gas Cylinders HE30/AA6082 and AA6351 cylinders in the UK / AA6351 cylinders in the USA and Australia
- Walter Kidde Company in the USA
- CIG Gas Cylinders in Australia (acquired by Luxfer Gas Cylinders in 1997)
- Reynolds Tube Company Ltd (later known as TI Hollow Extrusions) in England
Tank markings indication construction from HE30/AA6082 and AA6351 alloys are:
- HE30
- HOAL 1
- HOAL 2
- HOAL 3
- HOAL 4
- BS5045/3/B
- BS5045/3/B/S
- AA6351
- P****X (as part of the serial number)
- P****P (as part of the serial number)
The full HSE report can be found here: HSE Safety Alert - Siemens - Maxum II Edition Gas Chromatograph - Safety Features "
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6th Jul 2020, 03:07 PM #10
It'd make one hell of a bottle rocket
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6th Jul 2020, 05:51 PM #11
Hi Harry,
I've seen an oxygen bottle disappearing down the yard when the delivery guy dropped the new bottle off the lorry side and knocked the valve off ! He was lucky the valve didn't hit him in the nuts, it went between his legs and got caught by the cage behind him.
Fortunately no one was hurt !Best Regards:
Baron J.
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8th Jul 2020, 05:29 AM #12Member
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I have decided to empty it and scrap it as it isn't worth the risk, as I am not sure what the alloy is and as it is an old tank, I don't want the worry of "is it still safe". That way I can sleep at night!
Cheers
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8th Jul 2020, 10:51 AM #13Senior Member
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8th Jul 2020, 03:05 PM #14Member
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I am going to try and remove the valve if I can, if I can't release the valve then maybe put a drill a hole into it.
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8th Jul 2020, 03:48 PM #15Senior Member
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