VEVOR Water Pressure Pump, 12V DC 1.2 GPM (4.5 L/min), 2-Chamber Self-Priming Diaphragm Water Pump with 2 Hose Clamps, 80 PSI Max Pressure, Quiet Operation, for RV, Caravan, Marine, Garden Irrigation

 The pressure switch can be adjusted to regulate pressure. Open the switch cover to see the + and - symbols; turning the knob toward the - side reduces the pressure. If this answer does not resolve your issue, please contact us again for assistance.