We want to buy a pressure system to pressurize pool pipes,
skimmer lines/inlet lines/bottom drain lines in a continues basis for newly built pools until we put back the soil and be ready for making the pump station.
Please can i have your best idea---equipment to do this .

Why would you want to do this? We usually install and test and then protect the ends, if it is a drawn out job will go back and re test prior to backfill and test again after backfill.