Another suggestion for a regulator for carrying out this pressure calibration procedure is a Tourniquet, in mmhg, as used in Theatres.[ Calibrated of course in tandem with a Pressure Meter such as a Druck]. This allows spot on variation in pressures. Have rarely to calibrate as Occlusion Pressure is within spec via IDA for PPM checking.
Not quite sure what your problem is here, but dont now wht u need a regulator, it works fine with just a t peice (taped)between your giving set and meter, i personaly use a variable syringe (plunger is on a screw) i had made up
