Scubaroo
Contributor
Anyone know what alloy S80 3300psi tanks from 1989 were made from? Just picked up a pair out of hydro for $50 at a yard sale. The cert on the tanks is CTC DOT-3AL 3300 S80 M4002, original hydro 5-89. And are these Catalina tanks? I think they're neutrally buoyant, but am not sure.