RWO Oily Water Separator


RWO Oily Water Separator (OWS-COM) complies with the latest IMO Resolution MEPC.107(49) using the combination of the highly effective open permeable original RWO Coalescer together with a second stage emulsion breaking oil and hydrocarbon polisher.

To extend the operating life of the demulsifier, an automatic bypass is fitted to the separating system. The oil content monitor periodically checks the water quality of the first stage separator. If below the set  max. value, the demulsifier is bypassed. This results in lower operational cost and long product life.

The RWO Oily Water Separator system is equipped with a 15 ppm oil content alarm device, type tested and approved in accordance with IMO Resolution MEPC.107(49). During flushing of the alarm device the 3-way diverting valve is in recirculation mode (automatic stopping device).

Core components within the polisher stage are the original RWO Activated Carbon Cartridges. These are specifically designed and manufactured for high efficiency removal of free, dispersed and emulsified oils from water. The activated carbon adsorbs the hydrocarbons and actually bonds the oil in a very short time. The water flows radially into the cartridge and the adsorption media instantly encapsulates and solidifies the oil.


  • Easy to install and maintain
  • Safe operation: Oil Monitoring Device
  • Suction type: extends pump lifetime
  • Most compact

Service & Spares:
Mackay Oily Water Separator (RWO) – Annual Bilge Water Inspection & Spares Flyer (pdf)

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