Blue vertical cylinders at the bottom that house sediment or micron cartridges to remove fine particulates before water reaches the membranes. Includes an electronic RO controller display, dual analog pressure gauges, and flow meters(rotameters) to measure water rejection and product stream rates.The tall, black and metallic multistage motor pump on the far right used to force water through the high-density membranes. FOR ENQUIRY : 9600441999, 9600444464

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