The easiest way how to convert PVZ drawings to PDF would be to download the free Creo View Lite, open the *.pvz file and export it as PDF. It is a browser plugin, so there should be no real problem with this conversion.
Convert ProductView packaged structure and drawing to Adobe Portable document format.
We found one software available in the database for this conversion.
Microsoft Windows software - convert pvz to pdf on Windows
A utility used to view rich digital product data from PTC applications
Convert from pvz file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.