Here is a nice tabular chronology of Units 1- 4.
Again, double click on images to enlarge.
Conversion dope: MpaG & Mpaabs. These are metric units of pressure. One Mega Pascal, Mpa, in English units, equals 145 pounds/sq. in.
MpaG, is gage pressure, Mpaabs, is absolute pressure.
Gage pressure + 14.5 = Absolute Pressure.
