Perfectly matched to your application

Discharge and
Pressure Increase Pumps

Gear Metering Pumps | for large quantities

Discharge and Pressure Increase Pumps

Discharge pumps with low product shearing ensure an optimal discharge of viscous polymer melts of reactors. The discharge pumps can be supplied both liquid and electrically heated. Booster pumps are usually performed as an inline pump. They are mainly used after an extruder or a discharge pump. They create appropriate filling pressure for the following pumps or tools.


Booster pumps are also used as dosing pumps and ensure a smooth and gentle dosing and conveying polymer melts in the production of foils, films, profiles, granulates etc. Booster pumps are unheated, heated electrically or available for liquid or steam heating.

Flow cc/rev100 - 3000
Counter pressure bar (max)700


MaterialMaterial propertiesField of applicationPermissible operating temperature max.Permissible cleaning temperature max.
F24molybdenum, tungsten, vanadium and chromium alloyed high speed steel
for non-corrosive applications
  • highly wear resistant
N19high chromium alloyed stainless steel, additions of molybdenum and vanadium
for corrosive applications.
  • optimal combination of resistance to wear and corrosion
  • for chemically aggressive media


The pump drive connection is available in following types:

  • shaft type

Gear pump with motor

  • Base plate with mounting block
  • Coupling
    • curved tooth coupling
    • cardan shaft
    • all-steel coupling
    • magnetic coupling
  • Motor
    • asynchronous gear motor
    • servo motor / servo gear motor
    • synchronous geared motor

The drive units are designed according to the operating conditions.

Sealing systems for the gear pumps

  • stuffing box seal
  • rotary shaft seal
  • labyrinth seal
  • mechanical seal
  • magnetic coupling

ATEX Directive 2014/34/EU
A version according to the Atex directive is available for the pump as well as for the drive.

Heating or cooling for the gear pumps Booster pumps are available unheated, electrically heated or liquid-heated.


Gear Metering Pumps



Inquiry Specification
Gear Metering Pumps

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Technical Information

Pump Material of Construction



Inquiry Specification
Drive Unit

Please fill out this form – with this data we will select the suitable drive for the pump.


Mahr | Note

The entire pump portfolio cannot be completely listed due to the large number of available designs. The same applies to the fields of application. Please contact us!

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Mahr Metering Systems | Contact

Do you have questions about our products?

Please contact us at +49 (0) 551-7073-100

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