APM-44 Series Close-Coupled Progressive Cavity Wobble Stator Pump

APM-44 Series Close-Coupled Progressive Cavity Wobble Stator Pump

The APM-44 Series Close Coupled Progressive Cavity Wobble Stator Pump from Liberty Process Equipment offers the best value available on the pump market for a progressive cavity pump for flows up to 15 GPM and pressures up to 50 psi.

The simple design of the wobble stator and just one universal joint give you the inherent advantages of a progressive cavity pump of low pulsation and shear, solids handling and viscous liquids at an affordable price.

The Close-Coupled Version is available in either Cast Iron or 316 Stainless Steel with standard Buna Nitrile Stator with options in Viton and EPDM and Stainless Internals with a hard-chrome plated rotor for long service life. In addition, the pump is available with a standard mechanical seal or can be upgraded to a hard-face mechanical seal for abrasion resistance.

The APM-44 Series is offered with our unique Close-Coupled design mounted to a 56C Free C-Face motor. All pumps are offered “off the shelf” from our inventory for immediate shipment.

Technical Data

  • FLOW RATE – 0 – 15 GPM
  • PRESSURE – 0 – 50 PSI
  • SEAL OPTIONS – Mechanical Seal
  • BASE OPTIONS – Steel or Stainless Steel
  • INLET/OUTLET – 3/4″ x 3/4″
  • ROTORS – Stainless Steel Chrome-Plated
  • STATORS – Buna, VitonĀ®, EPDM
  • MOTOR OPTIONS – 1, 1.5, and 2 HP


  • Low Cost
  • Close Coupled
  • Low Shear
  • Solids Handling
  • Gear Reduction Options
  • Direct Motor Speeds

Click here for APM-44 Close-Coupled Progressive Cavity Wobble Pump Brochure