And they say steel tanks last forever....

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itch808

Contributor
Messages
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Location
Oahu, HI
# of dives
25 - 49
Got my LP 72 steel tank back from hydro, and it FAILED! Original manufactured date was '74. It only had a little surface rust on the inside, but nothing major. AL80 here I come :)
 
My LP 72's are older than that... still passing VIP's and Hydros.
 
I assume that should have been [sarcasm]AL80 here I come[/sarcasm]. Sounds like your tank lasted 33 years!
 
It probably wasn't properly cared for or was overfilled regularly. I have two tanks in service with original hydro dates in 1955.
 
itch808:
Got my LP 72 steel tank back from hydro, and it FAILED! Original manufactured date was '74. It only had a little surface rust on the inside, but nothing major. AL80 here I come :)
See how many Al tanks are in service from '74. I have a steel 72 from 1960 that is in hydro and has given me years of service.
 
itch808:
Got my LP 72 steel tank back from hydro, and it FAILED! Original manufactured date was '74. It only had a little surface rust on the inside, but nothing major. AL80 here I come :)

Clearly you were ripped off. Back in '74 you probably paid $50 for that tank! Highway robbery to pay that much for a tank and only have it last 32+ years.:D

If I were you I would post the name of the manufacturer of that cylinder so us good ScuabBoarders can begin a boycott and letter writing campaign!

Mark Vlahos
 
When I took the PSI tank inspection course a couple of months ago, they told us that the lifespan of a steel tank is in the vicinity of 30 years.

I have six 72s, and at least two of them date to the early 70's, and they passed hydro within the last year and a half. With luck, they'll do it again!

(BTW, Aluminum tanks have a much shorter lifespan.)
 
My 1973 aluminum is still in service. A steel tank to last as long as itch has is pretty good. 1970's compressed air was typcally not as pure as today's. I started out with a 1969 steel 72, and it lasted about 10 years. It a vinyl lined. Once it started rusting, it could not be tumbled.
 
I have a industrial O2 supply cylinder in my garage which was made in 1933.

Gotta be careful with overfills in particular, they do shorten the life.
 
https://www.shearwater.com/products/swift/

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