HNP Mikrosysteme

Micro annular gear pumps are miniaturized rotary positive displacement pumps for dosing and dispensing of low to high viscous liquids.




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Thomson Process Equipment & Engineering Ltd, Dublin, Ireland - IDEX agents for Ireland

Hermetically Sealed Series



The micro annular gear pump of the hermetic and chemically inert series is, considering its almost universal suitability for aggressive and corrosive media, a revolution in the pump technology.

Its rotors and functional elements being made of ceramics, the pump shows the highest chemical resistance and an out-standing resistance to wear. Thanks to the use of SSiC (pressureless sintered silicon carbide) as bearing and shaft material, a magnetic coupling, and case components made out of alloy C22 (DIN 2.4602), this pump will take up any challenge in the chemical industry applications.


  • Hermetically sealed
  • Magnetic coupling
  • High precision in dosage & repeatability CV 1%
  • Powerful, brushless DC- servomotor


pump size mzr-6355 mzr-7255 mzr-11558
displacement volume µl 24 48 192
flow rate ml/min 0.024 - 144 0.048 - 288 0.19 - 1152
max. flow rate l/h 8.64 17.28 69.12
min. dosage volume µl 15 30 100
differential pressure range bar 0 - 15 0 - 20 0 - 100
viscosity range mPas 0.3 - 1000
dosage precision (CV) % < 1
fluid connections 1/8" NPT 3/8" NPT

Product information downloads

Product information mzr-6355
Product information mzr-7255
Product information mzr-11557
Product information mzr-11558

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