Dan you mind me asking what what's the pneumatic system for, is it a flipper, lifter etc? Reason I ask is that with this set up I see it will be a bit slow reacting. I got a LP paintball reg and a 1/2" 5/2 valve, but that's only the size of the fitting it will take. The actual port hole will be much smaller. Same with the regulator, flow rate is very small, the inlet is barely 2mm in diameter! Check the port sizes of the ram as well, although it might be listed as 3/8" inlet/outlet, the actual hole will be much smaller. If the set up is for a lifter, then it's ok, but I can't see it will make a decent flipper without modifying your setup