Question Is there a high pressure version of LP50's?

[rhwestfall]

The 90's ScubaPro/Faber Chrome Molly tanks (painted white) have a service pressure of 3000, and to my knowledge never had a "+".

 

[rx7diver]

The 90's ScubaPro/Faber Chrome Molly tanks (painted white) have a service pressure of 3000, and to my knowledge never had a "+".

Well, the one I purchased for my then-GF, the ones in my Scubapro catalogs, are listed as being "3,000 psig + 10%." They are galvanized, but unpainted in my 1987, 1988, and 1989 catalogs, and galvanized and painted white in my 1991 catalog. (Evidently, I misplaced my 1990 catalog.)

rx7diver

 

[jstotz]

Well, the one I purchased for my then-GF, the ones in my Scubapro catalogs, are listed as being "3,000 psig + 10%." They are galvanized, but unpainted in my 1987, 1988, and 1989 catalogs, and galvanized and painted white in my 1991 catalog. (Evidently, I misplaced my 1990 catalog.)

rx7diver

That explains why these 1987 tanks are galvanized, though I think they've also been regalvanized

They were rated to 3,000 and have the + with the original manufacture date. Looks like they've gotten several hydros over the years. In 2021 they got a + stamp again. But the latest hydro in 2024 doesn't have the + stamp.

Am I correct in assuming that I need the + stamp after the most recent hydro test in order to get a + 10% fill to 3,300 psi?

 

[jstotz]

That explains why these 1987 tanks are galvanized, though I think they've also been regalvanized

They were rated to 3,000 and have the + with the original manufacture date. Looks like they've gotten several hydros over the years. In 2021 they got a + stamp again. But the latest hydro in 2024 doesn't have the + stamp.

Am I correct in assuming that I need the + stamp after the most recent hydro test in order to get a + 10% fill to 3,300 psi?

Another theory that I read online is that the original manufacturer's + engraving covers the tank for +10% for all time as long as it keeps passing hydro.

 

[rx7diver]

... Am I correct in assuming that I need the + stamp after the most recent hydro test in order to get a + 10% fill to 3,300 psi?

Yes, that's my understanding. I had my old-school PST 72 (2,250 psig + 10%, originally stamped with a "plus") re-hydro'd in 2022. I had specifically asked to have it "plus"-stamped this time, like every other time. When it first came back, there was no "plus". So, my LDS sent it back for the "plus".

rx7diver