Aquatec 8800 Series Pumps are used in RO systems with flow rates from 100-200 GPD. Reverse osmosis systems require pressure to work properly. A booster pump is suggested for applications where the feed water pressure is low, and where there are high levels of Total Dissolved Solids (TDS) in the water. Install this pump on the feed water line entering your Reverse Osmosis system to increase the pressure to the system for better performance. System includes transformer and pressure switch.