RO-400 series units can accommodate 28,800 to 172,800 gpd, with feedwater total dissolved solids ranging from 1,000 ppm to 5,000 ppm. These systems come standard with media prefilters, chemical dosing and antiscalant. Customization is available on all units based on individual water application and customer needs. Each unit includes 8-in. TFC spiral-wound membranes, an FRP membrane housing, an epoxy-painted steel frame, a stainless steel multistage pump with a TEFC motor, a 5 micron cartridge prefilter, a microprocessor-based control panel, programmable time delay and set points, a motor starter, low- and high-pressure switches, liquid-filled pressure gauges, a permeate conductivity monitor and permeate and concentrate flow meters.