The RO Pure UF-3 System consists of three separate filtration stages to provide you with clean, delicious tasting water. This kit includes one UF-3 Module with pre-installed filters and brushed nickel, twist top mount faucet. Changing filters is easy with the unique swivel-valve, push-button assembly allowing for one-step filter changes that do not require you to shut off your water source. It is important that this system is properly installed and maintained with an incoming water pressure of 40 to 80 psi for it to operate as designed. Three stages of filtration trap particulate matter and ensure a greater reduction of chlorine and other materials that cause bad taste. This kit contains everything you need to maintain crystal clear, high quality, and great tasting water. In order to maintain your system in its top performance it is recommended to change out both the sediment and carbon filters every 6 months and the UF membrane every year depending on the quality of your incoming water supply.