ASME Div.2 - stamp U or U2 ASME Div.2 - stamp U or U2 kurtz (Mechanical) (OP) 27 Jul 17 15:56 I have a pressure vessel for 15MPa and I want to calculate this vessel by ASME VIII Div.2. The customer wants to have stamp U. If I use ASME VIII Div.2 the manufacturer should have stamp U or U2? RE: ASME Div.2 - stamp U or U2 XL83NL (Mechanical) 27 Jul 17 22:18 Use VIII-1 with code case 2695. You can then U stamp the vessel with div 2 analysis.