Anywhere from 14 psi to 24 psi with maximum cleaning happening about 18 to 22 psi with the correct nozzle sizes installed.
NOTE: Nozzle size will affect the psi on the system and how well it cleans. The system is designed and specified with certain sizes at each location. Consult the Paramount supplied plan for correct sizes.
NOTE: DISTANCE FROM THE POOL AND PIPE SIZE AS WELL AS NUMBER OF TURNS IN THE PIPE (90 degree ells) can all increase or decrease the pressures and a clean pool is the true test.