This pump is 8852 which is higher flow than the 8851 version.This pump is made in USA, very reliable.It is designed to boost water supply pressure to 100GPD to 200GPD Reverse Osmosis water systems.This pump is to put on the input side of the RO system.If you want to increase the output pressure and volume for your RO system, then you need to use DDP 5800 Delivery demand pump.Typical applications for this pump: Water treatment: : Carbonation system:: Misting system:: medical labware::