Micro annular gear pump mzr-11507 Ex

Ex-pump for application in chemical and process technology

The micro annular gear pump mzr-11507 Ex is equipped with tungsten carbide rotors and bearings. Hard construction material and precision manufacturing techniques guarantee excellent dosage precision, high service life and wear resistance for low volume dosage of non-lubricating liquids. Driven by a explosion-proof three-phase AC-motor the pump has a compact design and covers the flow range from 58 ml/min to 1152 ml/min. The mzr-11507 Ex is suitable for continuous delivery of low and high viscosity liquids. It achieves high differential pressures and provides a low pulsation flow. Its robustness and the available accessories make it suitable for challenging applications in chemical and process technology.


  • Ex-certification ATEX
    conform with EU directive 94/9/EEC
  • High dosage precision
    precision CV < 1 % at low volumes
  • Long service life
    wear-resistant tungsten carbide
  • Broad viscosity range
    water, solvents, adhesives, grease, gel
  • Compact dimensions
    length 358 mm
  • High differential pressures
    achievable also for low viscosity liquids
  • Low pulsation delivery, low shear stress
    rotary micro annular gear technology
  • Chemical processing
  • Industrial and plant engineering
  • Packaging
  • Medical and pharmaceutical industry
  • Mini plant technology
  • Spray technology
  • Dispensing of adhesives
  • Ink and paint dosage
  • Vacuum applications

Heat insulation module

thermal insulation of pump head and drive for high performance and hermetic inert pump series,
also available in ATEX

Double shell heating module

double shell for active heating or cooling of pump heads from the high performance and hermetic inert series,
thermal insulation of pump head and drive,
prevents temperature drop of liquid
Ambient temperature range -20 ... +40 °C (-55 ... +60 °C *)
Flow rate 58 – 1152 ml/min (29 - 576 ml/min *)
Viscosity range 0.3 – 5,000 mPas (10,000 mPas *)
Precision CV < 1 % (Coefficient of variation CV)
Velocity range 300 – 6000 rpm (150 – 3000 rpm *)
Fluid connection 3/8" NPT internal thread, lateral optional 3/8" NPT internal thread, frontal
Wetted parts stainless steel 316L (1.4435), tungsten carbide Ni-based; shaft seal: graphite-reinforced PTFE, alloy C276 (2.4819); static seals: FPM, optional: EPDM, FFPM
Motor three-phase AC motor, IEC-Size 063, 2 poles, IP 55, rated voltage 240/400 V, frequency 50 Hz, 250 W
Dimensions (L x W x H) 358 x 120 x 224 mm
Weight approx. 22 kg
Temperature protection PTC-resistor, 6 pieces
Ex-certification CE II 2G c T4 X
Place of installation Ex area zone 1, 2
Differential pressure range 0 - 80 bar (1,160 psi)
Maximum inlet pressure 10 bar
Operating temperature range -5 ... +40 °C (-20 ... +120 °C *)
Displacement volume 192 µl
Smallest dosage volume 100 µl
Remark * depending on accessories,
Customized solutions on request

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 HNP Mikrosysteme. Actual performance may vary.
Specifications are subject to change without notice.

File Language Size
Manual mzr-11507 Ex
Manual mzr-11507 Ex (2.2 MB)
Betriebsanleitung mzr-11507 Ex (2.3 MB)
2.2 MB
Micro annular gear pump mzr-11507 Ex
Micro annular gear pump mzr-11507 Ex (83 KB)
Mikrozahnringpumpe mzr-11507 Ex (85 KB)
Micropompe gérotor mzr-11507 Ex (85 KB)
83 KB