marflex_pumping_system_on_board marflex_pumping_system_on_ships.jpg

MarFlex ballast pump solutions with Ballast Water Treatment Systems

Ballast Water Management

The Ballast Water Management Convention (BWMC) came into force in September 2017. The regulation requires all vessels trading in international waters to manage their ballast water according to ship-specific ballast water management plans. In addition, the BWMC calls for the installation or retrofit of a Ballast Water Treatment System (BWTS), a technical measure which filters and/or neutralizes living organisms in the ballast tanks. The application of a BWTS may require a review of the ballast pump specifications. Based on our experience, MarFlex believes it can provide ship owners and managers with a number of different solutions for their vessels.


MarFlex ballast pump with specifications that comply with the characteristics of the selected BTWS.


When a new BWTS is fitted on-board, MarFlex can, based on the characteristics of the BWTS:

  • Update the MarFlex ballast pump settings to comply with new working condition(s).
  • Upgrade the MarFlex ballast pump(s) and/or MarFlex electrical system to meet any increased pressure, capacity and/or automation demands.
  • Deliver new MarFlex ballast pump(s) with a drive system to vessels without a MarFlex pump system.

Based on our latest completed modifications with BWTS upgrades, we have seen that small modifications to the pump head in combination with a bigger electric motor are often sufficient to compensate for the pressure loss in the BWTS.

In addition to the mechanical modifications, we recommend the attendance of a commissioning engineer during the first ballasting operation with the new treatment system. The engineer is then able to fine tune the automation system and set the right parameters to ensure that you can optimally operate your BWTS during operations.

If you have any questions, please feel free to contact the MarFlex service department. With the right specifications, we will be able to provide you with the optimal solution.

For advice, please call + 31 (0)186 890 200 or send an email to



MarFlex Europe (HQ)
Louis Pasteurstraat 8
3261 LZ Oud-Beijerland
The Netherlands

Tel: +31 (0)186 890 200
Fax: +31 (0)186 890 249




Pumping Excellence

© MarFlex - all rights reserved - Privacy Statement - Sitemap - trade register Rotterdam 24230201
MarFlex is a member of Taiko Holdings