Compact Maxi Range

Reverse Osmosis Compact Maxi

The COMPACT MAXI Reverse Osmosis range is designed using horizontally mounted 8 inch RO pressure vessels in order to offer high volume flow rate with low area footprint. The control panel incorporates PLC and HMI for optimisation of operation and the flexibility of integrating ancillary items such as pre-treatment dosing and additional pumps should these be required.

  • 7” Colour screen Human Machine Interface (HMI) providing a fully integrated custom display for full RO system control.
  • Permeate recycle as standard to reduce water wastage and extend membrane life via automated permeate three-way valve.
  • Facility for sampling permeate from individual RO membrane vessels.
  • Optional chemical dosing for anti-scalent and chlorine removal with redox monitoring.
  • 5 µm cartridge pre-filter for RO system protection.
  • HMI interface with volt-free ‘common alarm’ and ‘critical alarm’ interface signals.
  • Automated permeate monitoring control to ensure high quality product.
  • Full mechanical and electrical assembly on 304 stainless steel skid, complete with adjustable legs.
  • Compact footprint required for installation.
  • Clean In Place (CIP) connections and control system compatibility as standard.
  • High efficiency membrane elements.
  • Optional facility for integration of up to four extra pumps.
  • Full factory acceptance testing at our UK works prior to delivery.


The pre-treated water supply is fed through an inlet control valve and a pre filter (5 µm filter element) before reaching the RO high pressure pump. High pressure water is then passed through semi-permeable membranes where water purification takes place, typically rejecting approx. 95% – 99% of contaminants. This purified water is referred to as permeate. The rejected water that does not pass through the membrane contains high concentrations of rejected ions and is known as concentrate. A portion of concentrate will be recycled through the RO with the remainder passed to drain.

Designed, built and tested at our UK manufacturing facility all AWT systems are fully supported with on-going preventative maintenance being provided for additional peace on mind by our national team of in-house engineers.

Other products in this range

An extensive range of cost effective AWT Reverse Osmosis models including the MINI, MIDI & MAXI are available providing flow rates from 300 litres per hour to 25m³ per hour with additional pre and post treatment equipment to suit all applications.

For further information about any of our services or products please contact us by

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