MTP is a proud distributor of ProMinent Chemical Dosing Pumps and Water Treatment Packages.

The Hydro is an extremely robust hydraulic diaphragm metering pump that offers a high degree of flexibility in different applications. The Hydro/ 2 hydraulic diaphragm metering pump (HP2a) together with the Hydro/ 3 and Hydro/ 4 pumps represent an integrated product range with stroke lengths of 15 and/or 20mm. This covers the capacity range from 3 to 1,450l/h at 100 – 7 bar. A wide range of drive versions are available, including some for use in Exe and Exde areas with ATEX certification.


  • Metering reproducibility is better than ±1% in the 20 to 100% stroke volume range under defined conditions and with correct installation
  • PTFE multi-layer diaphragm with electric diaphragm rupture warning system via a contact
  • Integrated hydraulic relief and bleed valve
  • A wide range of power end versions is available: three-phase standard or 1-phase AC motor, motors for use in Exe and Exde areas, different flange designs for use in customer-specific motors
  • Features
  • Applications

Excellent process safety and reliability:

  • PTFE multi-layer diaphragm with integral diaphragm rupture warning system
  • Integral hydraulic relief valve
  • Metering reproducibility is better than ± 1% within the 20 – 100% stroke volume range under defined conditions and with proper installation

Excellent flexibility:

  • The modular construction with single and double head versions permits a wide range of applications, with the double head designs being operated in push-pull mode
  • It is possible to combine up to 5 metering units, even with different pump capacities, in multiple pump systems
  • 5 different gear ratios are available
  • Oil and gas industry
  • Volume-proportional metering of chemicals/additives in the treatment of boiler feed water
  • Metering of reactants and catalysts in the chemical industry
  • Level-dependent metering of auxiliary agents in industrial production engineering, for instance hot wax metering in the production of adhesive strips
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