Pressure Vessels (U Stamp)
All Hanson Pressure Vessels EXCEPT lined potable hot water storage tanks are built and tested in accordance with the A.S.M.E. Boiler and Pressure Vessel Code Section VIII Division I for unfired pressure vessels
and bear a “U” stamp, National Board number and serial number, as required. A copy of the A.S.M.E. data sheet, U1-A, signed by an A.S.M.E. authorized inspector, will be sent with the invoice if requested at time of order.