How can you tell the difference between a hp tank and a lp tank?

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nes999

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I'm a Fish!
I purchased a steel U.S divers steel 80 cuft tank how can I tell if its hp or lp? Thanks
 
The service pressure will be stamped into the tank up by the neck. What does it say?


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I looked before, found out why i couldnt find it. a previce hydro stamp was half over it. the stamp says 2250 so it should be low pressure correct?
 
That sure sounds like an LP

Is it roughly the same size as an aluminum 80? An LP should be.

HP80s are smaller.


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You are correct it is about the same size as my AL 80's
 
@2250 you have an old LP72. But it is only 72cuft when filled to 2250+10%. Otherwise at 2250 you have 66cuft. Does the last hydro have a plus mark next to it?
 
https://www.shearwater.com/products/peregrine/

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