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

[nes999]

I purchased a steel U.S divers steel 80 cuft tank how can I tell if its hp or lp? Thanks

 

[fisheater]

The service pressure will be stamped into the tank up by the neck. What does it say?


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[nes999]

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?

 

[fisheater]

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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[nes999]

You are correct it is about the same size as my AL 80's

 

[Scared Silly]

@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?