Blackmer System One Pumps (Formerly Chesterton)

System One Pumps (Formerly Chesterton)Blackmer System One (Formerly Chesterton Pump) is a medium-duty centrifugal pump designed for the toughest and most extreme environments. They are the industry standard for reliability as well as high-quality and durability.  They meet ASME/ANSI B73.1 dimensional specifications so every pump will fit as your pump solution.


  • Lowest L3/D4 stiffness ratio of any competitive sized pump in the industry.
  • Solid shaft (no sleeve) with minimal overhang provides superior resistance to deflection and common vibration damage.
  • Oversized angular contact bearings are standard for high thrust capability. Dramatically reduces bearing, seal, and shaft failures.
  • Patented System One labyrinth seals provide non-wearing lifetime protection for radial and thrust bearings.
  • Pump can be centerline mounted for the ability to handle high temperature applications.
  • Vortex style pumps available for greater solids handling capability.
  • Quality power frame upgrades to most common ANSI pumps.


  • Ductile iron
  • 316 stainless steel
  • CD-4
  • Alloy 20
  • Hastelloy C


  • Flows to 1,500 GPM
  • Heads up to 750 feet TDH

Visit Blackmer’s Website For More Information