Tank Identification
- Thread starter lonestardiver
- Start date
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ScubaBasics
Contributor
They are steel 72 cubic feet tanks. 1 is made by Pressed Steel PST.
The 2250 is a steel 72.
There weren't many of those 3000 psi made. I have only seen a couple. Someone else on one of the boards mentioned what size they are, but I can't remember. I think it is about an 80 cu ft. I sure someone will identify it.
What is the original hydro year on the 3000 psi tank? Is it 73 or 78?
As a last resort you can measure the actual water volume during a hydro test to determine an accurate internal volume.
Nice find.
Good luck
There weren't many of those 3000 psi made. I have only seen a couple. Someone else on one of the boards mentioned what size they are, but I can't remember. I think it is about an 80 cu ft. I sure someone will identify it.
What is the original hydro year on the 3000 psi tank? Is it 73 or 78?
As a last resort you can measure the actual water volume during a hydro test to determine an accurate internal volume.
Nice find.
Good luck
OP
lonestardiver
Guest
I pulled the information from my "Mystery" Tank... 
Dot/Service PSI: DOT-3AA3000
?: 7788U
Hydro Dates:
4c78+
6F84
I didnt see any other markings on the tank....
Dot/Service PSI: DOT-3AA3000
?: 7788U
Hydro Dates:
4c78+
6F84
I didnt see any other markings on the tank....
The 3AA just indicates that it is a chrome-molybdenum seamless steel tank, the same as most LP tanks including the steel 72.
The first hydro date is the 4c78 +
That date makes sense. It was probably made to compete with the AL 80 which was growing in popularity at the time.
The plus means that it was intended to be filled at 10% over the 3000 psi (as long as it has a + next to the current hydro). Getting a + next to a current hydro would be close to impossible without the REE number.
I think I can almost make out a PST symbol right above the original date, is that correct? It would be a large P with smaller S and T.
Nice tank. I would love to have a couple of them.
The first hydro date is the 4c78 +
That date makes sense. It was probably made to compete with the AL 80 which was growing in popularity at the time.
The plus means that it was intended to be filled at 10% over the 3000 psi (as long as it has a + next to the current hydro). Getting a + next to a current hydro would be close to impossible without the REE number.
I think I can almost make out a PST symbol right above the original date, is that correct? It would be a large P with smaller S and T.
Nice tank. I would love to have a couple of them.
OP
lonestardiver
Guest
I went and looked again at the tank I could only make out the letter "P"... I looked closely but didnt see the "st"... I will take another look at it in better light when I get home...
So is this tank considered LP at 3000?
Im also assuming that since the last hydro in 84' it did not receive "+" so it can not be overfilled correct?... I have no plans or desire to overfill it but I was just curious.... I know at least in North Texas... I couldnt get an overfill anyway due the LDS's not having compressors they have like out in Florida.. Im lucky to get my 3000 PSI.... (Sorry for the generalization, but its been my experience LOL...)
So is this tank considered LP at 3000?
Im also assuming that since the last hydro in 84' it did not receive "+" so it can not be overfilled correct?... I have no plans or desire to overfill it but I was just curious.... I know at least in North Texas... I couldnt get an overfill anyway due the LDS's not having compressors they have like out in Florida.. Im lucky to get my 3000 PSI....
(Sorry for the generalization, but its been my experience LOL...)
OP
lonestardiver
Guest
I was looking at the PST site to find some info and found a Spec sheet for their tanks... I also found that they had a "MP72" at 3000PSI listed... I wonder if the dimension match with what I have... I doubt it but Im going to check....
here is link to the spec sheet:
http://www.pstscuba.com/PST%20Scuba%20Product%20Specifications.pdf
here is link to the spec sheet:
http://www.pstscuba.com/PST%20Scuba%20Product%20Specifications.pdf
vintagediver
Contributor
captain
Contributor
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