Setting Relief Valve Pressure for Piston Accumulator Setting Relief Valve Pressure for Piston Accumulator Metehanbektas (Automotive) (OP) 28 Jan 16 12:52 Hello, I have q question regarding relief valve pressure. I have an accumulator with max. permissible pressure 350 Bar. I have seen that, one can choose Relief valve with 360 Bar. My question is gonna be: Should I construct my all other hydraulic elements like cylinder, pipelines to 360 Bar ? or 350 Bar ?