Tank identification

[BigDustyman]

I recently baught three tanks one that was said to be an 80 cfm steel tank the numbers are 3AA2250 second line is HJ 250405 The hydro dates where 7 71 +
and 5 04 between the month and year is stamped B5 68 Dimentions are
26 inches from bootbottom to valve and 22inches around





the next tank which came packaged as double setup
first line ICC 3AA 2250 same on both second line 1867 second tank 26120 PF
Hydro dates 2 83 Dimentions are 25.5 high and 22 inches around

any help would be appreciated Thank you

 

[Luis H]

All three seem to be steel 72.

In 1971 there were no steel 80’s

The other two tanks are basically the same but they must be a bit older since the stamp is ICC (Interstate Commerce Commission) rather than DOT (department of transportation).

The 3AA means they are made of Chrome- Molybdenum steel, per CFR49.


If they are galvanized tanks, they are very good tanks…painted are OK if you dive mostly fresh water.

 

[DA Aquamaster]

If I remember correctly, HJ was stamped on tanks made by PST and sold by Healthways. It was common then for companies to make tanks that were then marketed by other companies. (like Worthington and XS scuba today)

The first tank would have been made in July 71 and the last hydro test was May 2004. B568 is the code for the hydro test facility that did the recertification.

The DOT was formed in April '67 so the switch from ICC to DOT markings would have occurred in mid 1967.