© 2019 by E-ROTEK WATER SYSTEMS CO., LTD.  |  Pingtung County, Taiwan  |  jeff@rotekwater.com  |  (886) 2 2218 6425



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RA series Reverse Osmosis Systems
800-6,000GPD (150-1,000LPH)

ROTEK compact commercial reverse osmosis system is a durable piece of equipment which, with proper care and maintenance will last for many years. RA series systems are part of a family of reverse osmosis units designed for operation with fresh and brackish feedwaters having TDS values below 1,500ppm. Models are available with permeate outputs of between 150 and 1,000 litres/hr as shown in the specifications.


  • Specialized Micro-Computer Controller

  • Fully Equipped and Customizable

  • Factory Tested and Preserved

  • 1-Year Limited Warranty

  • Manufactured in Taiwan

Standard Features

  • RO micro-computer controller with permeate TDS readout

  • 300PSI stainless steel membrane housing+PE end caps

  • NUERT rotary vane pump for 800GPD
    ROTEK LPE multistage pump for 1500-6000GPD

  • 5 micron sediment pre-filter x 2 in series

  • Rotek rotameters for permeate and concentrate stream

  • Rotek pressure gauges for prefilter feed and RO feed

  • Low pressure switch

  • SS316 concentrate needle valve

  • Concentrate recycling valve (without flow meter)

  • Electro-plated SS304 skid frame

Available Options

  • RO membranes available with brands of
    Filmtec, Hydranautics, Vontron and Toray

  • FRP membrane vessel

  • Grundfos multistage pump

  • CNP multistage pump

  • Cocentrate recycling flow meter

  • Provision for CIP


* Minimum recovery rate is calculated based on no concentrate recirculation,
  it is possible to increase the overall recovery rate by increasing the concentrate circulation flow.

** Permeate flow rate can vary depending on type of membrane, raw water quality, and recovery rate.