Evac ROSYS M reverse osmosis plants

Evac ROSYS M standardized reverse osmosis plants have been developed in response to the trend of fitting smaller vessels with RO technology.

Our range includes plants with a daily freshwater generation capacity of 30, 60, 90, or 120 m³, all with the possibility to expand capacity as required. These medium sized, modular plants are environmentally friendly, robust, easy to install and operate, quiet, and have an extremely small footprint.

The modular design means that the plants can be custom-designed for the available space on board and made up of modules that best match the individual vessel’s requirements. Our modular reverse osmosis plants can be adapted to local regulations, as well as changing operating conditions. They are suitable for marine applications of all kinds, including vessels such as yachts, cruise ships, and river cruise vessels.

All plants are equipped with the following:

  • Two-stage pre-filtration
  • Highly energy-efficient high-pressure pump
  • High-rejection membranes
  • Automatic product monitoring
  • Pressure switches for pump and membrane protection
  • Process control via 4″ touchscreen
  • Automatic freshwater flush with carbon filter


  • Energy efficient
  • Modular design can be easily extended according to requirements
  • User-friendly control interface
  • Extremely small footprint
  • Durable components ensure a long lifetime

Fresh water generation
Fresh water generation systems turn seawater into process, service, and drinking water. The equipment also filters and disinfects the water, adjusts its hardness, and mineralizes fresh water that has been created or stored.

Evac offers seawater desalination units using reverse osmosis (RO), as well as potable water treatment equipment using mineralization and disinfection. Our product range includes equipment for the differing requirements of passenger, merchant, and naval ships, as well as offshore facilities and buildings.

Evac RO desalination units are economical and energy efficient, especially compared to evaporators. If energy recovery systems are used, even higher energy efficiency can be achieved, leading to a shorter amortization time.

General data


Visit EVAC's website

Contact us

Palle Wredstrøm

Phone: +45 43 68 50 04

Email: marinesales@hansbuch.dk

Get a call or get an email with further details on our products.

[ninja_forms id=28]
Get data sheet

Get an overview of the technical data, applications and design.

Sign up for newsletter

Get advice and insights on topics that interest you, directly in your inbox