Help with PST tank

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Apparently they did!

PST made hundreds if not thousands of different cylinders.
 
Any info on the tank would be appreciated. I havent found it on any of the charts to see what size it is.
 
Who's to say it's even a scuba tank?
Fill it with water and measure the volume.
 
Your right this doesnt look like a scuba tank!
 

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PST made some 3000 psi steel 80s at one point, for USD I believe, but they may have sold them elsewhere. They were almost exactly the same size as a 72, but heavier. You used to hear stories, in those pre-BC days, of divers strapping them on thinking they were 72s, and sinking straight to the bottom.
 
My wife has a pair of MP steel 72's that are rated at 3000
Stamped 3AA3000
Manufactured 10/05
 
https://www.shearwater.com/products/perdix-ai/

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