HNPM mzr-7243

  • Max. Capacity 28.8 ml/min

  • Max. Pressure 5 bar

  • Max. Viscosity 10000 mPas

  • Temperature Range -5 to +80 °C 

HNPM mzr-7243

HNP Mikrosysteme Modular Pump Series HNPM mzr-7243 Micro Annular Gear Pump

The HNP Mikrosysteme micro annular gear pump HNPM mzr-7243 Small Dimensions, Low Pulsation, High Precision Low Volume Dosage of Non Lubricating liquids.  modular pump series are suitable for dosing and metering in low to medium pressure and viscosity ranges. 

The HNP Mikrosysteme micro annular gear pump HNPM mzr-7243 pumps are suitable for dosing and dispensing deionized water, aqueous solutions, solvents as well as low to highly viscous oils, lubricants or dyes. These Micro Pumps are suitable for dosing very small volumes of liquid in discrete dosing. The compact design means that a very sophisticated mechanism fits in an extremely small space.
The HNP Mikrosysteme HNPM mzr-7243 Modular Series Pump has low shear stress and low pulsation - all operated with no valves. The materials are fully customisable with pump components available in stainless steel/tungsten carbide, aluminum/tungsten carbide or alloy C22/Ceramics.

Advantages of the HNP Mikrosysteme HNPM mzr-7243 Micro Annular Gear Pump

  • Customized material selection - pump components in stainless steel/tungsten carbide, aluminium/tungsten carbide or alloy C22/ceramics

  • High dosage precision - precision CV 1 % at low volumes

  • Dynamic powerful small drive - stepper motor, high torque

  • Long service life - wear- and corrosion-resistant materials

  • Low pulsation delivery, low shear stress  - rotary micro annular gear technology

Applications of the HNP Mikrosysteme HNPM mzr-7243 Micro Annular Gear Pump

  • Chemical processing

  • Industrial and plant engineering

  • Packaging

  • Dispensing of adhesives


Flow rate

0.048-28.8 ml/min

Viscosity range

0.3 - 10,000 mPas (max. 50,000 mPas *)

Precision CV

1 % (Coefficient of Variation CV)

Velocity range

1 - 600 rpm

Fluid connection

1/8" NPT internal thread, lateral
optional: flanged connection with pipe socket, frontal

Wetted parts

Pump case: stainless steel 316L, optional: aluminium anodized, alloy C22; rotors: tungsten carbide Ni-based, optional: ceramics; bearing: ceramics, epoxy resin; shaft seal: graphite-reinforced PTFE, stainless steel 316L; static seals: FPM, optional: EPDM, FFPM


stepper motor NEMA 17 standard

Dimensions (L x W x H)

approx. 128 x 42 x 60 mm


approx. 815 g (aluminium version approx. 560 g)

Differential pressure range

0 – 5 bar (0 – 40 bar *)

Maximum inlet pressure

1 bar (5 bar *)

Operating temperature range

-20 ... +60 °C

Displacement volume

48 µl

Smallest dosage volume

30 µl


* with optional additional axial bearing support

Even if single parameters are within the indicated performance range of technical data, certain parameter combinations may not be achievable. Single parameters may exceed their indicated performance range under adequate circumstances. For detailed evaluation please contact Irish Agent for HNP Mikrosysteme - Thomson Process Equipment and Engineering Ltd. Actual performance may vary.
Specifications are subject to change without notice.



Optional equipment

  • Fluidic seal module - use of liquids sensitive to air or water or for vacuum applications
  • Axial bearing support - increase of differential pressure range from 5 bar (73 psi) to 40 bar (580 psi)
  • Static seals - EPDM or FFPM
  • Liquid supply accessories - threaded fluid connectors, tubes, filters etc.