Thats what I thought, yet on Sunday I was told by whoever was inspecting bottles in the morning that they were filling them to 4.5 like all the others. I kept mine to 3k just to be a little safer but has anyone else heard this?Please, before giving advice... Think about what you're saying and at least back it with some facts!
They have been deemed safe to use by HPAC, although, yes, they are only filling them to 3k psi.