PSG TECHNOLOGIES - GEAR PUMPS:

PSG offers both Internal and External gear pumps.  Gear pumps are ideally suited for applications where a wide range of viscosities are prevalent.  Internal gear pumps excel in higher viscosity applications and external gear pumps are better suited in applications where transferring fluids at mid-to-lower viscosity ranges are required. 

Internal gear and external gear pumps displace fluid by the gears coming in and out of mesh which draws the fluid into the pump and then forces the fluid through the discharge and downstream of the pump.  The meshing actions of both the internal and external gear pumps are different by design.  Internal gear pumps have a rotator and idler gear that come in and out of mesh and external gear pumps have two coinciding gears that come in and out of mesh; this meshing is what creates the pumping action for both types of gear pumps.  The major difference between the two is the overall area between each gear tooth which ultimately determines the best suited viscosity ranges for each type of gear pump – internal or external.  

Our Gear Pump Brands

INTERNAL GEAR PUMP                                EXTERNAL GEAR PUMP