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High Capacity and High Efficiency

The RO-500 Series is a compact industrial reverse osmosis system designed and manufactured in the USA on a powder-coated, carbon steel frame, and energy-saving membrane elements, durable enough to handle the wear of long-term use at low life-cycle costs, with water flow rate of 200,000 – 900,000 gallons of purified water per day.

Highly Purified Drinking Water

Municipalities and industrial facilities use RO permeate from the RO-500 as a consistently high purity drinking water supply. Used at microelectronics, food and beverage, power, marine and pharmaceutical facilities.

Plug-and-Play

Your RO-500 Series Reverse Osmosis system will arrive at your facility ready to run with all components installed and ready for action. With RO-500 you get:


•   Technical support

•  Simple operation for anyone to learn

•  Maintained easily

•  Replacement parts available

Pure Aqua, Inc. continues to set the standards in reverse osmosis systems and water purification with the RO-500 Series.

Operation Specifications: Max. feed water temperature: 42°C Equipment upgrade for TDS over 5,000 ppm Hydrogen Sulfide must be removed Turbidity should be removed Feed water TDS: 0-1,000 ppm Hardness over 1 GPG requires antiscalant dosing Max. Silica Tolerance: 60 ppm @ 60% recovery Max. Iron content: 0.05 ppm

Operation Specifications:
  • Max. feed water temperature: 42°C

  • Equipment upgrade for TDS over 5,000 ppm

  • Hydrogen Sulfide must be removed

  • Turbidity should be removed

  • Feed water TDS: 0-1,000 ppm

  • Hardness over 1 GPG requires antiscalant dosing

  • Max. Silica Tolerance: 60 ppm @ 60% recovery

  • Max. Iron content: 0.05 ppm

  • Feed water pressure: 20 to 80 psi

  • Operating pressure: 150 to 250 psi

  • pH tolerance range: 3-11

  • Operate at higher TDS by lowering recovery


Industrial Brackish Water Reverse Osmosis Systems RO-500

Model Number Permeate Flow Rate Quantity of 8" Membranes Motor Rating at 1,000 ppm
GPD M3/D 60Hz (hp) 50Hz (kw)
TW-200K-4780 200,000 758 28 30 22
TW-225K-5680 225,000 852 30 30 22
TW-270K-6680 270,000 1,023 36 40 30
TW-320K-7680 320,000 1,212 42 40 30
TW-360K-8680 360,000 1,364 48 50 37
TW-410K-9680 410,000 1,553 54 60 37
TW-450K-10680 450,000 1,705 60 60 45
TW-500K-11680 500,000 1,894 66 60 45
TW-550K-11780 550,000 2,083 77 75 45
TW-600K-13780 600,000 2,273 91 75 55
TW-700K-14780 700,000 2,652 98 100 75
TW-800K-16780 800,000 3,030 112 2X60 2x37
TW-900K-18780 900,000 3,409 126 2X60 2x37
For more information, please see our PDF in the "Documents" tab



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Standard Features:

Available Options:

  • Powder coated carbon steel frame

  • 8” TFC spiral wound membranes

  • Stainless steel multi-stage pump with TEFC motor

  • FRP membrane housing

  • 5 micron cartridge prefilter

  • 460V/3Ph/60Hz power supply

  • PLC based control panel

  • Programmable time delay and set points

  • Status indicators

  • Motor starter

  • NEMA 12 enclosure

  • Low pressure switch

  • High pressure switch

  • Liquid filled pressure gauges

  • Permeate conductivity monitor

  • Permeate & concentrate flow meters

  • Post deionization polishers

  • Remote monitor / control option

  • Feed water conductivity monitor

  • Membrane cleaning skid

  • Automatic hourly flush

  • Feed / Permeate blending

  • Export crating

  • 380-415V/3Ph/50Hz power supply

  • 220V/3Ph/60Hz power supply

  • Product tank level controller switch

  • Feed pH controller with sensor

  • Feed ORP controller with sensor

  • Water and hour meters

  • Chemical dosing systems

  • Media and Iron prefiltration systems

  • Ozonation and UV sterilization systems

  • Water softeners

There are a number of applications and industries that an RO-500 Series Industrial Reverse Osmosis System by Pure Aqua are ideal for. These include:

  • Brackish Water

  • Toxic Contaminants

  • Water Cooling

  • Treated Sewage Effluent (TSE)

  • Microbiological Contaminants

  • Boiler and Feed (Ultrapure) Water

  • Desalination

  • RO for Power and Energy Industry

  • Water Recycling & Reuse

  • Food & Drinking Water

  • Water Contaminant Treatment