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R4X40 Watts

Six models for flow rates up to 6,600 US GPD

Series R4X40 Reverse Osmosis Systems feature powder coated steel frame, inlet solenoid valve, 20 in. prefilter, prefilter pressure gauge, multistage centrifugal pump, low-pressure protection with microprocessor auto reset, 2 1/2 liquid filled pump pressure gauge, FRP multi-port pressure vessels, product flow meter, reject flow meter, concentrate needle valve, non-metallic recycle needle valve, feed water and product water TDS monitor, and tank level input (dry contact). Deluxe Series has retreatment interlock input (dry contact).


  • Reverse osmosis system for whole house, boiler feed water, humidifiers, greenhouses, process water and other applications
  • Six models for flow rates up to 6,600 gallons per day
  • 20 in. prefilter and prefilter pressure gauge
  • Low-pressure protection with microprocessor auto reset

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific R4X40