• New Gardner Denver FXQ

    With New Cat C-15
  • Our



  • We Ship


  • Mud Pumps

    Authorized dealer of Gardner Denver Pumps
  • Custom Machining

    For Companies and Individuals




Armstrong Machine Company has been a leading manufacturer of high quality mud pump expendables since 1974. Our product offering is extensive, including: Hydraulic Driven Grout Pumps, Gardner Denver Duplex and Triplex Pumps, slush pump valves, liners, pistons, gaskets, centrifugal pumps and their parts, and so much more. Every AMCI product is manufactured to high standards for long lasting performance under tough conditions. When you specify AMCI products, you purchase quality with time proven experience.

Quality products ... Competitively priced ... and available to you anywhere in the world.



Our Services

Custom Machining

We machine almost all of our own parts.

Heat Treating

Heat-treating operation in Pocahontas