I came across a slight dilemma. I have a pressurized vessel with about 120 Bar (roughly 1740.45 psi) I need some type of system and/or valve, that could help me take the internal pressure from 120 bar to atmospheric pressure in 6 minutes with a constant flow rate of about 20 bar per minute. Any suggestions? or possible experience on this subject? Would also need to record the flow rate... Thanks in advance.