1, Double pass RO water purifier 2, Good performance and high quality 3, ... : 220V/110V,50/60Hz3.Other items list D2P serie(2 pass RO water treatment plant) Model No.ProductionNo. of 4" elementDesigned ... -13000GPD130002000 1875%7.0KWD2P-2-19000GPD190003000 2680%8.5KW double pass reverse osmosis water treatment plant 4000LPH