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American AP-56 Series

Long-Coupled Wobble Stator Pumps and Parts

The American AP-56 Long-Coupled Wobble Pump offers flows from 0-24 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 pumping viscous liquids at an affordable price.

In addition, the pump is available with a standard mechanical seal or can be upgraded to a hard-face mechanical seal for abrasion resistance. We also offer optional gland packing. The American pump series is also offered in a close-coupled design for mounting on a baseplate with a standard motor.

View Pump Curves, Drawings & Performance

Find out more about the specifications of the American Series AP56 Pump on our Liberty Process website.

Aftermarket American Series AP-56 PC Pump Parts

AP-56 Wobble Pump Motors/Baseplates

Motors and mounting baseplates for full pump packages are available based upon your requirements. Please contact us today to discuss your options.

AP-56 Wobble Pump Stators

Standard Buna Nitrile stators with options in Viton and EPDM. Other stator materials are available. Contact us for details.

AP-56 Wobble Pump Rotors

The long-coupled version is available with a standard 304 stainless steel hard-chrome plated rotor for long service life.

AP-56 Wobble Pump Parts

Replacement pump parts as well as rebuild services for wobble stator pumps are available. Parts are available online, for rebuild services please contact us.

*Neither Progressivecavityparts.com nor its parent companies nor their replacement aftermarket progressive cavity pump parts are representative, affiliated or associated with Moyno®, Tarby®, Netzsch®, Continental®, Seepex®, Roper® or Allweiler® or their respective parent corporations. All part numbers, product lines and/or descriptions are for reference purposes only.

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AP56 Wobble Stator Pump Sold Individually $1,164.00	AP56 Wobble Stator Pump-Stainless Steel Sold Individually $2,449.00	AP56/APM56 Pump Stator Sold Individually $574.00

w/Threaded Connections - 0-24 GPM	w/Threaded Connections - 0-24 GPM	Viton


AP56/APM56 Threaded Pump Rotor Sold Individually $267.00	AP56/APM56 Suction Case Sold Individually $337.00	AP56/APM56 Suction Case Sold Individually $555.00

Chrome Plated Stainless Steel	Cast Iron	Stainless Steel


AP56/APM56 Pump Stator - EPDM Sold Individually $155.00	AP56/APM56 Mechanical Pump Seal Sold Individually $63.00	AP56/APM56 Hard Face Pump Seal Sold Individually $150.00

EPDM	Carbon/Ceramic with Buna Elastomers	Silicon Carbide/Silicon Carbide with Buna Elastomers


AP56/APM56 Mechanical Pump Seal Sold Individually $73.00	APM56/AP56 Threaded Flex Joint Sold Individually $338.00	AP56/APM56 Threaded Flex Joint Sold Individually $244.00

Carbon/Ceramic with Viton Elastomers	Stainless Steel and Viton	Stainless Steel and Buna Nitrile


AP56 Threaded Drive Shaft Sold Individually $220.00	AP56 Bearing Sold Individually $165.00	AP56 Bearing Housing Sold Individually $327.00

Stainless Steel	Steel	Cast Iron


AP56 Bearing Housing Sold Individually $835.00	AP56/APM56 Drain Plug Sold Individually $10.00	AP56/APM56 Drain Plug Sold Individually $16.00

Stainless Steel	Steel	Stainless Steel


AP56 Retaining Ring Sold Individually $14.00

Steel