The Pure Water Power 4-stage Cart allows for spot free rinse using only regular tap pressure up to 50 ft. high. This system is configured for optimum pure water cleaning and uses 4 types of filtration for the best and most economical total filtration possible. The 4 stages of filtration are as follows: Stage-1 from the incoming water supply is the sediment filter which removes rust and large solids, Stage-2; is the Carbon filter which removes the Chlorine prior to Stage-3; which is the Reverse Osmosis (RO) which removes 98% of the Total Dissolved Solids (TDS) before passing through the final Stage-4; De-Ionization (DI) filter which brings the TDS level down to 0. This gives you 100% pure water for cleaning and rinsing without spotting and provides that level for a much longer time before any filters are required to change. This Pure Water Power RODI System produces almost a gallon per minute at heights up to 50 ft. with normal incoming pressure of 60 psi from the source. Pure Water Power has delivered a tap water RODI system carefully configured with the most efficient water flow available using only tap pressure and has constructed this unit with all brass fittings. (No plastic parts found on this commercial work horse) and stainless steel RO housing for a professional look and commercial grade quality and ruggedness. If you demand perfection at a better than market price, well this unit is what you want. This systems is capable of producing 2500 GPD at 125 psi incoming psi. Easily connect to any water source and any waterfed pole. Equipped with standard garden hose fittings in and out. It is more than recommended to use a 5/8" I.D. minimum hose diameter incoming water supply. Anything smaller will restrict the water flow of this system. Can be used, stored and transported in the flat position or upright.