he Flojet 2840 Series Booster Systems are designed to provide a constant water pressure of 0 to 40 psi 0.7 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.