The pumps are preset with a target amperage in mind. If you exceed that amperage, the motor life will DRASTLY be reduced and WNTY will be void. I wouldnt go much past 25 PSI. As of last Monday, we now offer a new motor that can push 60 PSI plus and last 10,000-15,000 Hrs. This new motor can be installed on your current base. If you are looking for 30+ PSI... . i would go this way... ... Contact your dealer. He has an updated parts sheet with this option listed.
Ask for RP-1006 (this is the 150 series FASS, 150 gph pump... actually 200 GPH with the larger motor... . higher RPM)