R4X40 Series Whole House RO

Three models for flow rates up to 6,600 GPD

Standard Features

  • Powder-coated steel frame
  • Inlet solenoid valve
  • 20″ prefilter
  • Prefilter pressure gauge
  • Multistage centrifugal pump
  • Low-pressure protection with microprocessor auto-reset
  • 2112″ liquid filled pump pressure gauge
  • Stainless steel pressure vessel(s)
  • Product flow meter
  • Reject flow meter
  • Concentrate needle valve
  • Nonmetallic recycle needle valve
  • Feedwater and product water TDS monitor


  • Whole house
  • Humidifiers
  • Process Water
  • Boiler feedwater
  • Greenhouses
  • Electronics

*Includes atmospheric storage tank, product float switch, and repressure pump with built-in controls.

Note: For indoor installation only.

Notes: Maximum production based on feed water of 77°F, SDI < 1, 1000 ppm TOS, and pH 7. Individual membrane productivity may vary (+/- 15%). May be operated on other feed waters with reduced capacity. Percent Rejection is based on membrane manufacturer specifications; overall system percent rejection may be less. *RaX40-3 is available only in 230-volt single phase.