Metering Systems

Metering Systems
Inline Gear Metering Pumps - MarInline
EN

Inline gear metering pumps are single stream pumps mounted in-line with the tubes. This type of pump is used for several applications. Because of the in-line mounting no additional pump block is necessary.

Mahr Inline gear metering pumps are available in different technical designs and there are too many variations to have real standard types. Therefore please contact us in order to get the right proposal for your application.

  • Technical Data
  • Material
  • Drive Options
  • Options

In the following you can find an overview of some technical solutions:

flow cc/rev 0,16 - 3.000
counter pressure bar (max) 700

 

Material Field of application Admissible operating
temperature max. °C
Admissible cleaning
temperature max. °C

These materials are used in combination.

E20

highly chromium alloyed high grade tool steel with additions of vanadium, tungsten and molybdenum

F24
molybdenum tungsten vanadium and chromium alloyed high speed steel

 

  • for larger flow rates from 30 cc/rev


 

  • highly wear-resistant



 

400 500

N19
high chromium alloyed stainless steel, additions of molybdenum and vanadium

  • optimal combination of resistance to wear and corrosion
  • for use with chemically aggressive media
180 200

N19
high chromium alloyed stainless steel, additions of molybdenum and vanadium

F24
molybdenum tungsten vanadium and chromium alloyed high speed steel

  • optimal combination of resistance to wear and corrosion
  • for use with chemically aggressive media
     
  • highly wear-resistant

180
 

200


Coating

Coating technologies take a significant key position in the development of new products. The various coating technologies enlarge the application possibilities of the used base materials. Furthermore, a coating reduces friction, wear and corrosion. In principle, all the named materials can be coated depending on the specification.
 

DLC-Coating

Diamond-Like Carbon (DLC) improves the properties:

  • high surface hardness
  • high wear protection
  • smaller coefficient of friction
  • better corrosion reduction to agressive media
  • higher chemical resistance / stability
  • non-stick effect (reduced adhesion of polymers and other materials)
  • high temperature firmness to 250°C
  • excellent accuracy to size (no change of the Mahr / Feinpruef specific high discharge accurancies)
  • high economic efficiency through longer endurance and improvement of the technological properties

DLC- coatings are biocompatible and facilitate also the use in the food industry and in the medical field.

The pump arbor are available in following types:
 

  • extended drive shaft
  • carrier shaft


Gear pump with motor

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


The drive units are designed according to the operating conditions.

Sealing systems for the gear pumps

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


 

Atex Directive II2Gc

A version according to ATEX directive is available for the pump, as well as for the drive.

 

Heating or  cooling for the gear pumps

Heating or cooling can be provided electrically, as well as by the thermal fluid.