Attaches to any existing NANOpure®, NANOpure II®, E-pure® and most Milli-Q® or other competitive systems which incorporate a recirculation pump. The cross flow hollow fiber filter is part of the recirculation line, providing constant cleaning and flushing of the filter surface. Delivers up to 1.5 Liters per minute, drop by drop to a steady stream, up to 8 feet away from the unit.