Series PWR2511 Reverse Osmosis (RO) Systems are commercial grade high-pressure RO units for the reduction of total dissolved solids from water. They are designed to supply reverse osmosis quality water with production rates ranging from 150 to 1,200 gallons per day. The standard units are designed for wall mounting. Where floor mounting is preferred, the optional floor mounting kit Model No. PWR2864 can be specified. Reverse osmosis is a process where high-pressure feed water is fed into a semi-permeable membrane chamber. In the chamber, pure water is allowed to pass through the membrane material and exit as purified permeate water. Dissolved mineral salts are not allowed to pass through the membrane and become a concentrated reject stream that is sent to drain. These RO systems use high-rejection membranes to achieve a minimum average NaCl ionic rejection of 95 percent. This series features high-pressure/high-rejection membranes with 95% minimum average salt rejection and membrane auto flush. Other features include: 304 stainless steel wall mounted support frame, 316L stainless steel 300psi high-pressure membrane housings, pressure gauges for pre-filter inlet/outlet and membrane feed pressure, low feed water pressure safety switch, microprocessor based controller with delayed auto restart after low pressure shut down, permeate and reject water flow meters, adjustable reject and reject recycle valves, permeate pressure switch and check valve, and automatic inlet solenoid valve.Flow Rates: Up to 1,200 gallons per day (4,542 lpd)