Specialised in the development and manufacture of pump solutions for marine, industry, oil spill combating, defence & fuel and utility both locally and globally.

Our product range supplemented with agency products from other leading, world class manufacturers – is completed by related services such as the design and installation of pump plants, oil spill recovery and after sales service through our network of service centres.

The DESMI pumps and systems are sold to more than 100 countries via a network of subsidiaries and distributors on six continents.

In order to meet future customer demands for more complete systems, including DESMI pumps, we are providing solutions and systems as well as single standard pumps or components. With focus on the individual needs from our customers we are providing solutions based on proven technology.


Brief Summary

ROTAN can offer a complete series of internally toothed gear pumps in cast iron, carbon steel and stainless steel.

Irrespective of which interest you may have in chocolate production or the manufacture of production plants for this industry, this introduction will provide you with answers to many of the questions you may have.

End Suction Centrifugal


The pumps of the MODULAR S series can be supplied as free shaft end, mounted on the base plate with petrol or diesel engine, hydraulic or electric motor or in a closecoupled design with electric motor. They can also be fitted with a manual friction clutch and V-belt pulley and with step-up bevel gear ratio 1:2.

MODULAR S/02 Self-priming centrifugal pumps in closecoupled design


Key features and benefits

  • Flexible sealing options
  • “True” back pull-out design
  • Opposing inlet and outlet connections with oversized ports
  • Shaft supported by two ball bearings in single sealed configuration
  • Self-priming with large suction capabilities
  • Low NPSH requirements
  • Self-draining, integral safety relief valve
  • No speed reduction required in six smaller sizes
  • Complete heating/cooling jacketing available


Design Features

The pump is a vertical in-line, radially split, single-stage centrifugal pump with connecting flanges according to international standards. The pump is designed for mounting with electric motors having different international flange dimensions.

The pump casing is equipped with a replaceable sealing ring.

The impeller is made with double-curved blades to ensure low NPSH-values and high efficiency.