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Grundfos DMH
Electromechanical Dosing Pumps

  • Grundfos DMH
  • Grundfos DMH

Grundfos DMH

The Grundfos DMH range is a series of extremely strong, robust pumps for applications requiring a reliable dosing and high-pressure capability, such as process engineering. The DMH 28x has been especially designed for high-pressure applications from 50 up to 200 bar. The range is highly versatile: it covers a wide flow range and offers a variety of dosing head sizes, materials and accessories. Customers worldwide have enjoyed years of trouble-free operation from their DMH pumps.
DMH pumps have a very high dosing accuracy and allow an exact reproducibility. For DMH25x, the dosing flow fluctuation is <± 1.5 % within the 10-100 % control range, and the linearity deviation is ± 2 % of the full-scale value. For DMH28x, the dosing flow fluctuation is <± 1.0 % within the 10-100 % control range, and the linearity deviation is ± 1 % of the full-scale value.


  • Power plants
  • Petrochemical/oil & gas industry, refinery
  • Treatment of process water and
    drinking water
  • EX zones
  • Dosing of flammable liquids


  • High pressure dosing up to 200 bar
  • Very accurate dosing
  • Smooth and low-pulsation dosing
  • Full PTFE membrane as a standard

Technical Data


  • The versatile DMH range offers high-quality motors for 50 Hz, 60 Hz, 100 Hz, as well as EX classified or ATEX-certified motors, if required.
  • A wide choice of materials for dosing head, valves and accessories allow selecting exactly the degree of chemical resistance required.