Careful when filling
- Thread starter 12keithdraper
- Start date
Are you sure about the 6000 psi rating? That tank has no wrap and appears to be just aluminum - I know of no unwrapped tank rated that high, let alone one made of aluminum . . . .
Edit - When I posted this question, his original post said the tank was rated at 6000 psi. He later edited it to 5500 as noted in post #5 but never addressed anything else. There is no way that tank is rated for 5500 psi - probably not even 3000 . . . it could well be a misused CO2 tank that would probably blow at about 3000 psi.
Edit - When I posted this question, his original post said the tank was rated at 6000 psi. He later edited it to 5500 as noted in post #5 but never addressed anything else. There is no way that tank is rated for 5500 psi - probably not even 3000 . . . it could well be a misused CO2 tank that would probably blow at about 3000 psi.
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Somebody blowing smoke up your butt!
There are no aluminum 6000 psi tanks that I know of! 6000 are very thick steel .
There are no aluminum 6000 psi tanks that I know of! 6000 are very thick steel .
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Was anyone hurt? That is a SERIOUS blow! WHERE on the tank does it say it's 5500 rated? Something is not right!
Maybe VALVE is 5500 rated, NOT TANK. This is serious & scary. PLEASE post a picture of where you're getting the 5500 number from. might be a test pressure # & not working pressure. I've always been concerned someone will make a mistake & get hurt.
Maybe VALVE is 5500 rated, NOT TANK. This is serious & scary. PLEASE post a picture of where you're getting the 5500 number from. might be a test pressure # & not working pressure. I've always been concerned someone will make a mistake & get hurt.
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Are you ok? It looks like very old tank , where did you get it from? I think it should be check every 5 years. Be careful with the next one.
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look at the rupture disk plug, it should tell you a pressure rating to fail if over filled.
i've never seen an aluminum tank take more than 200bar/3000psi
i've never seen an aluminum tank take more than 200bar/3000psi
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I can't tell from the pics. Is it wrapped? If so, it could have been painted and that can damage the tank. If Aluminum unwrapped, then I've not seen any rated over 3xxx psi. It is also unlikely, (unless, of course, someone messed with it) that the rupture disc didn't blow first. Aluminum has, under some circumstances, been known to stress fracture, that is if it's cycle stressed to a high degree. That is why you don't see 4500 psi AL tanks, the lower rating keeps the cycle stresss to less than 30% (IIRC), so I seriousely doubt there's a 5500 psi AL tank on the market. Keeping the cycle stress below 30% calculates out to an astronomical number of service years before a stress failure. Read up on it, it's easily found information.
There's more to the story......
There's more to the story......
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Pretty certain that is an aluminum tank as it has a flat bottom. PSI ratings should be stamped at the top- I think I can kinda see some stamped markings in the photo. OP 12 Keith: any chance you could post a pic of the numbers?
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There was a load of 600cc aluminium buddy bottle that were only rated to 2000psi being sold on eBay as 200bar airgun bottles.
I wonder if it could be one of those
I wonder if it could be one of those
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It's been a lot of years, but that doesn't even look like a 3000psi bottle. It looks like a CO2 bottle. I cut a few of each down some years back and the 3000psi bottles were very thick walled - 3/8"-1/2". The bottle in the picture appears to be 3/16"-1/4".
GsT
GsT
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We used to have 100cf scuba tanks that were 3300 psi aluminum. Very havy tank.
Test pressure for aluminum tanks was 5/3’s working pressure. 5/3=1.667.
So 3300x1.667=5500psi.
But as mentioned, that wall looks way to thin for a 5500 fill. Sumpin’ ain’t right.
Test pressure for aluminum tanks was 5/3’s working pressure. 5/3=1.667.
So 3300x1.667=5500psi.
But as mentioned, that wall looks way to thin for a 5500 fill. Sumpin’ ain’t right.
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I'm thinking this was done on purpose in a controlled environment........No one would survive that?
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