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Gear Pumps

Gear Pumps

AxFlow can supply both internal gear pumps and external gear pumps

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Gear pumps use the actions of rotating gears to transfer fluids. The rotation develops a liquid seal with the pump casing and creates suction at the pump inlet. Meaning that Fluid drawn into the pump is enclosed within the cavities of its rotating gears and transferred to the discharge.



  • AxFlow offer a wide range of gear pumps including internal and external types, mag driven versions and plastic and alloy wetted materials.
  • We are experts in gear pumps having supplied them for over 40 years.
  • We have a large team of external and internal pump specialists, and a network of Pump Support Centres spread across the country.

AxFlow UK offers a large range of gear pumps from 3 manufacturers; Envirogear, Pulsafeeder, and Slack & Parr. Gear pumps are often used for high viscous and density applications as they can withstand high levels of pressure.

External gear pumps are used for most applications due to their simple construction, ease of maintenance, and relatively low cost. How external gear pumps work. 

Internal gear pumps are generally used for high viscosity fluids, high temperature and low NPSH applications. How internal gear pumps work.

  SS Hastelloy C Steel Duct PVDF ETFE Max Flow m3/hr Max Pressure bar Gear Type Type
Eco Chemgear       12.5 13.8 External Mech Seal
Isochem       12.5 69 External Mag Drive
Eclipse         7.5 10.5 External Mag Drive
Envirogear       113 13.8 Internal Mag Drive



  • Easy maintenance
  • Can handle viscous fluids
  • Can run at low speeds
  • Self priming
  • Low cost

How to select Gear Pumps

How to maintain Gear Pumps

How Internal Gear Pumps work

How External Gear Pumps work

10 series from 4 manufacturers

PD Pumps Team
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