• 9366 Deerwood Lane Maple Grove
  • 763-425-7890 / 800-328-2350
  • sales@pfcequip.com

Progressing Cavity Pumps offers solutions for your applications.

Progressive cavity pumps are fundamentally fixed flow rate pumps. Like piston pumps and peristaltic pumps, and this type of pump needs a fundamentally different understanding than the types of pumps to which people are more commonly introduced. Namely ones that can be thought of as generating pressure. This can lead to the mistaken assumption that all pumps can have their flow rates adjusted by using a valve attached to their outlet, but with this type of pump this assumption is a problem, since such a valve will have practically no effect on the flow rate and completely closing it will involve very high pressures being generated. To prevent this, pumps are often fitted with cut-off pressure switches, rupture discs (deliberately weak and easily replaced), or a bypass pipe that allows a variable amount of a fluid to return to the inlet. With a bypass fitted, a fixed flow rate pump is effectively converted to a fixed pressure one.

At the points where the rotor touches the stator, the surfaces are generally traveling transversely, so small areas of sliding contact occur. These areas need to be lubricated by the fluid being pumped (hydrodynamic lubrication). This can mean that more torque is required for starting, and if allowed to operate without fluid, called ‘run dry’, rapid deterioration of the stator can result.

While progressive cavity pumps offer long life and reliable service transporting thick or lumpy fluids, abrasive fluids will significantly shorten the life of the stator. However, slurries (particulates in a medium) can be pumped reliably if the medium is viscous enough to maintain a lubrication layer around the particles and so protect the stator.

Bulk Explosives Pumping
Open Pit Mining Dewatering
Close Pit Mine Dewatering
Grand Flush Water
Grouting & Shotcrete

The Chopper Hopper

Progressing Cavity Pumps Applications

Environmental Area

  • Waste Water and Sludge Treatment.
  • Sludge Dewatering.
  • Dewatered Sludge Treatment.
  • Metering of Chemical additives (polymers).
nov progressing cavity pumps

Chemical Area

  • Chemical and Biochemical Industry.
  • Cosmetic Industry.
  • Pharmaceutical Industry.
  • Painting and Varnishing Industry.
  • Metering (metering of chemical additives).
progressing cavity pumps

Food and Beverage Area

  • Food and Beverage Industry.
  • Wine Industry.
  • Olive oil Industry.
  • Vegetable and Fruit Industry.
  • Distilleries and Brewing Industry.
  • Sugar Industry.
  • Milk and Dairy industry.
  • Fish Industry.
progressing cavity pumps

Oil and Petrochemicals Area

  • Oil and petrochemical industry.
  • Gas Industry.
  • Crude Oil Processing.
  • Drilling Fluids.
  • Oil-water separation.
progressing cavity pumps

Others Industrial Areas

  • Agriculture.
  • Construction.
  • Shipbuilding.
  • Paper Industry.
  • Wood Processing.
  • Automotive Industry.
nov progressing cavity pumps