Corrosion-resistant gear pumps for chemical processes

MAAG flexinox™ pumps are corrosion-resistant conveying units; they satisfy the stringent quality requirements of today’s chemical processing industry and their three-piece configuration facilitates maintenance and replacement of internal parts, such as gears and bearings. They can be heated either electrically or with fluid. Thanks to the extensive range of components and materials available, MAAG gear pumps can be configured to suit customers specific requirements and therefore, are far superior to standard pumps in terms of performance and reliability.


Quick cleaning kit

MAAG´s FQ – ‘quick cleaning’ version has been released for the production facilities with a constant need to clean and wash the transfer line at the end of each production batch, different colours, different additives etc. The pump can be disassembled at the quickest without needing to dismantle the drive shaft from the drive motor and the seal.

This feature can be applied also on the existing pump series by using the FQ kit or the pump can be selected as a FQ model itself.


The FQ can change the production and maintenance style without compromising on the desired operating characteristics. It provides high flexibility and functionality with easy maintenance and part replacement possibilities.

Suitable for


Technical data
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  • Wide viscosity, temperature and pressure range
  • High efficiencies due to tolerances being modified in line with applications
  • Precise displacement volume
  • Self-priming
  • Corrosion-resistance
  • Reliability and longevity
  • Safety
  • Easy replacement of internal parts

A range of typical pumping media (EN)

Organic and inorganic chemicals
Acids and alkalis
Sludges and condensates
Prepolymers, oligomers, and monomers (PAN)
Cellulose derivatives and pulps
Waxes and paraffins
Cosmetic products
Pharmaceutical products
Food extracts and flavourings
Gum base
Vegetable/animal oils and fats
Molten Sulfur

Certificates (EN)

ATEX certificate
3.1 certificate
Performance test certificates


Bi-directional operation
Special modifications for demanding applications

Technical Data

Rotational speed [U/Min]
max. 3000
Differential pressure [bar]
max. 100
Viscosity in mPas
0.3 – 500,000
Temperature in °C
-30 – 320
Output l/min
0,4 – 139
* Stainless steel* Hastelloy
Gear shafts
* Stainless steel* Ferralium* Hastelloy* Ceramics* Technopolymer (upon request)* Titanium (upon request)
Shaft Seals
* Single or double mechanical seal* Single or double mechanical balanced seal* Lip seal and packing seal* Sealing ring in a wide range of materials* Sealing medium or heating medium connections available* Magnetic coupling with single or double containment shell
SAE, CETOP, DIN and ANSI flanges
Pump heating
* Electrical heating by cartridges on request* Integrated channels for heating/cooling by means of steam or liquids