FloJet Water Booster System - 40psi - 4.5GPM - 24V. 7 to 2.7 bar) and a maximum flow rate of 4.5 gpm at 10 psi (0.7 bar). The pump is fully automatic with built in inlet strainer pressure switch and check valve and supplies smooth flow from tricke to full flow. Typical uses include applications where available water pressure is very low and fluctuates widely. Easy installation requires only that the water lines be connected and the power cord plugged in. Features of FloJet Water Booster System Gallons Per Minute: 4.5 gpm PSI: 40psi Volts: 12 Volt Package Contents: FloJet Water Booster System FloJet 02840300A: Water Booster System - 40psi - 4.5GPM - 24V