​The NRO SIMPLX Series is a Commercial Reverse Osmosis System that doesn’t cut corners and is engineered to deliver performance and quality. Performance without compromise, this series includes all the essential components necessary to produce quality RO Water in a trouble free and cost effective package. The NRO SIMPLX Series is conservatively rated for Commercial or Light Industrial applications requiring flow rates of 1600 and 3200 gallons per day (GPD). NSF-grade high quality parts are used to build this tough system. All Nelsen Commercial RO Systems are wet tested to optimum pressure and production prior to shipment.

Features & Benefits

  • ​Stainless Steel Multi Stage Booster Pumps card icon
    ​Stainless Steel Multi Stage Booster Pumps

    ​Some of the most durable booster pumps available. The SignaSeal floating impeller design minimizes thrust loads allowing for continuous operation without damage to motor bearings, mechanical seal, or pump hydraulic components.

  • ​Pump Mounting System card icon
    ​Pump Mounting System

    ​The Stainless Steel Booster Pump mounts to a separate bracket and slides onto the frame making field repairs and service easy.

  • Permeate and Concentrate Flow Meters card icon
    Permeate and Concentrate Flow Meters

    ​Panel mounted meters to accurately adjust the system for optimum production.

  • FRP Membrane Housings card icon
    FRP Membrane Housings

    High Gloss 300 psi rated membrane housings. Concentrate Pressure Gauge - Glycerin filled for accurate & steady pressure readings

  • High Flow 5 Micron Prefilter - Front mounted for ease of access
  • Throttle Valve - to adjust system to optimum production
  • Low Pressure Mechanical Switch
  • Brass Inlet Shut Off Valve
  • Easily Replaceable Sch 80 PVC Fittings - for ease of field repairs
  • Easily Replaceable Motor Mounting System - for ease of field repairs
  • High Flow TFC Low Pressure Membranes - other types and ratings available

Additional Resources

Optional Equipment
  • PSC-60D

    Panel Mounted TDS Monitor - HM Digital PSC-60D offers dual display monitoring for the industrial water treatment professional. This extended range EC/TDS “mini” monitor continuously monitors 2 lines simultaneously, and the dual line display shows feed and product water. The unit features digital calibration, 2 stainless steel electrodes and 120v power source (separately or through the chip controller). Measurement Range: Temperature: 0.0 - 75.0 °C / 33.0 - 167 °F, TDS: 0 - 9999 ppm, EC: 0 - 9999 μS

  • Bladder Tank

    ​Bladder Tank Control - used to charge a pressurized bladder tank instead of atmospheric storage. Used when smaller quantities of RO water is needed. Storage is restricted by pressure tank size. All controls and components are included to pressurize the bladder tank including check valve and pressure switch.

  • NRO Chip Controller

    ​The Chip Control Box is an economical option for a RO controller available for both the SIMPLX and NRO-440 systems up to 4 membranes. The smaller modular design allows for easier assembly, service and flexibility with a clean and logical layout. It features 6 LED lights to indicate system operation of the RO Unit. The controller removes the need for a low pressure switch to control the pump and a start delay to prevent system cycling. A switching power supply operates on 96-264VAC, automatically adjusting to operating voltage. Voltage at the supply terminals is the voltage for the pump and valves. The controller allows for tank level, system flushing.


Production GPD16003200
Membrane4" x 40" (1)4" x 40" (2)
Permeate GPM1.11 GPM2.2 GPM
Feed GPM67
% Recovery19-23%23-50%
Pump3/4 HP1 HP
FLA 60HZ 1Ø 110/22014.8/7.4-/9.6
Circuit Size25/15A-/15A
Floor Model Unit Dims (DxWxH)22"x17"x55"22"x17"x55"
Weight - Pounds97 lbs.125 lbs.
Max Operating Pressure160 psi160 psi

The stated product performance is based on data taken after 30 minutes of operation at the following test conditions:  2,000 mg/L NaCl solution at 225 psig ( 1.5 MPa) applied pressure, 15% recovery, 77o F (25o C), pH 6.5–7.0. Minimum pressure of 35psi dynamic.

Contact us about this product