A Quick Guide To Progressive Cavity Pumps And How To Make Them Last Longer
Progressive cavity pumps (PC pumps) are highly accurate metering pumps that are part of the rotating positive displacement pump family. With a wide range of possible applications, they're used in all types of industry.
Why use a progressive cavity pump?
PC pumps are an excellent choice for tough pumping applications,
like fluids with a higher viscosity or thickness than water,
as these are usually beyond the range of centrifugal pumps.
How do progressive cavity pumps work?
A PC pump has a rotor (usually made of solid metal) shaped
as a single helix inside a flexible or rigid elastomer stator.
It has a double helix cavity to pump viscous liquids at high
pressures. As the rotor turns, cavities are opened and closed,
allowing the fluid to be transferred from one cavity to the
next, and ultimately, to discharge the fluid at the required
When suction conditions aren't great, a progressive cavity pump needs a much lower Net Positive Suction Head (NPSH) to a centrifugal pump. This is because its internal pump velocity is lower. As the internal velocity of the liquid as it travels through the pump is much lower than other types of pumps, the PC pump is designed to last longer on abrasive applications.
Of course, with any pros come cons, and we've written another article on the various reasons why a PC pump could be the right solution for you, or not.
Here's how to keep progressive cavity pumps running smoothly and reduce maintenance costs:
If you want advice on keeping your progressive cavity pump
running smoothly for longer, or you're trying to decide if the
PC pump is the right buy for your application, call our toll-free
number 1-800-367-4180. We have experts on hand to help you choose,
install, and maintain a variety of equipment. And to answer
questions about things you've previously tried gone wrong.