Designed to flow 42 GPH (Gallons Per Hour) of pure RO water with an astounding 1:1 ratioHigh flow rates and water savings never before seen in a package so affordable and durable. Utilizing the best membrane technology in the world and wrapped in our GX Series patented bracketing system, our premier flagship is a mobile powerhouse. A pair of liquid-filled stainless steel pressure gauges tell you when its time to change the pre-filters. For those who demand even more performance, the GX1000 can be used with a BP-1000 pressure-boosting pump to DOUBLE GPD output.