Inline Gear Metering Pumps - MarInline

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 drive connection is available in following types:

shaft type
plug 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
- 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.