High Pressure Gear Pumps (HGP)

Get More from Your Process

PSI High Pressure Gear Pumps (HGP) feature a long-life, heavy-duty gear design that takes on the tough demands of high-torque polymer extrusion applications.  Whether working with restrictive dies or high viscosity plastic materials, the HGP delivers consistent performance where standard gear pump designs wear out or fail.  These highly efficient positive displacement pumps take on the pressure building function to deliver a precise linear volume of output.  This effectively takes the load off the extruder, reducing extruder amp draw and extending component life while delivering steady die pressure and uniform product gauge. The art is in the profile.  PSI High Pressure Gear pumps offer larger diameter gear shafts that provide the high torsional strength required when processing high viscosity / fractional melt-flow polymers.

PSI Screen Changer/Diverter with High Pressure Gear Pump


Throughput rate (pph) [kg/h]2.7 - 9,750 [1.2 - 4,423]
Displacement (cc/rev)4.03 - 1,477
Temperature (°F) [°C]
Up to 650 [343]
Max oper. pressure (PSI) [bar]
max. 10,000 [980]
Differential pressure (PSI) [bar]max. 4,500 [310]
  • Long-life through-hardened tool steel gears
  • Non-square gear profile handles higher torque applications
  • Bronze anti-galling Visco seals
  • 30%-50% more seal area than any other competitor
  • Up to 99+% efficient
  • Pressure and temperature instrument ports
  • Compact, low-profile design
  • Drop-in replacements for most competitors’ gear pumps
  • Operating pressure to 10,000 psi [690 bar]
  • Delta pressure to 4,500 psi [310 bar]


  • Application specific materials of construction
  • Application specific clearances
  • Seal cooling
  • High temperature to 750°F [454°C]
  • Delta pressures to 7,500 psi [517 bar]
  • Extremely Wear resistant materials
  • Dual drive
  • Internal fluid heat/cool
  • Flush/bleed ports
  • Pump or cart mounted J-box
  • Synchronized haul-off control (integrated in PSI supplied PLC gear pump controller)
  • Support cart
  • Torque limiting couplers
  • Variable Frequency Drives
  • Pressure Instruments
  • Adaptors
  • Motor encoders


  • ExtrudPak-100 PLC/HMI – Gear Pump Only
  • IntegraPak-100 PLC/HMI Integrated Control – Screen Changer / Gear Pump
  • IntegraPak-300 PLC Integrated Control – Screen Changer / Gear Pump / Haul-Off
  • IntegraPak-500 PLC Integrated Control – Screen Changer / Gear Pump / Heat Control / optional Haul-Off
  • Stand-alone Heat Control Panel
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