Yes it is a nitrogen over oil accumulator with floating piston. From what i am gathering from 1976-1989 proof test was synonomous with hydrostatic pressure test until ASME now defines it as a destructive test since it can cause deformation (i.e. burst test) so they don't want it used to refer to...
Is Proof Pressure a different test than a hydrostaic or pneumatic test for pressure vessel? What is it governed by with regards to testing requirements? 1.5 X MAWP or is it greater than that?
We bought an accumulator last year with the nameplate listing a MAWP of 3000psi and a proof pressure of...
