It gets re-tested, not scrapped . I should think it will work on a speed but not too sure. Test date wise i think it has at least another year, i will check for you,
Don't think you know what you're talking about...()
The High/Low Pressure part isn't related to what pressure the actual tank can withstand (i.e. 3000, 4500, 5000psi). It's related to the output of the regulator.