Hexagon offers freeware plug-ins to both SolidWorks and Inventor, which allows you to export PVElite-files to one of the 3D-programs for further use. Depending on what you want to do, that may be useful. It does use some details like material callouts on each position, but from my experience, its best to model your own pressure vessel in a softweare like Inventor or SolidWorks.
Adding to what XL83NL said, I used PV Elite SolidWorks plugin on SolidWorks 2018 and found that the import tool works well. It models the element systematically, for instance, flanges are Revolved around axis and bolt holes are Cut Extruded later. However, not all details are translated correctly and components like saddles (gaps between plates), flanges (always raised face) have to be cautiously rectified. Hence, it can only be used for basic modelling to client about how it looks like in the big picture.
