How Do Peristaltic Pumps Work?

Easy to setup and maintain, peristaltic pumps are ideal for handling abrasive fluids and shear sensitive fluids in a range of applications

Peristaltic pumps are also known as hose pumps, tube pumps or roller pumps. They provide a reliable and simple solution for moving almost any fluid in a wide variety of markets and applications.

Peristaltic hose pumps can transfer, dose or meter a range of fluids, including cosmetic lotions, abrasive slurry or sodium hypochlorite.

Peristaltic pumps offer a flexible solution for chemical processing, wastewater applications, food & beverage and more. When paired with variable speed drives or a PLC, pump flow can be adjusted to accurately meter or dose fluids.

At the core of the pump is an elastomeric hose or tube that contains the fluid, virtually eliminating the possibility of product contamination. Albin Pump manufactures a variety of durable tube or hose materials to meet the chemical compatibility required for each application.

Principles of Peristaltic Pump Operation

Les pompes péristaltiques fonctionnent selon un principe simple. Les galets ou les sabots déplacent le fluide dans le tuyau.

The pump hose is compressed successively by two pressing shoes assembled on a rotating wheel. The first shoe, by pressing the walls of the hose, will create a vacuum and attract the pumped liquid into the hose.

Once the pumped liquid has entered the hose, the second roller passes over the hose and pushes the liquid toward the pump outlet.

When the shoe at the discharge side is detached from the hose, the opposing shoe is already in compression, thus preventing any backflow. The pumped fluid is then successfully pulled in and pushed out due to the wheel rotation.

Peristaltic Pump Advantages

  • Peristaltic pumps have fewer mechanical parts than other pump technologies, decreasing the service required for worn parts.
  • When needed, pump maintenance is quick and easy. Scheduled service consists of a simple hose change-out, yielding a lower total cost of ownership.
  • Fluid does not touch any part of the pump, except the inner surface of the hose or tube.
  • The rollers or shoes move fluid through the hose or tube, so there is no need for degassing valves. The rollers squeeze the tube to prevent backflow and eliminate the need for mechanical seals, creating a seal-less system.
  • Flow can occur in either direction through the hose. This bi-directional flow enables a user to easily clean the hose by flushing the lines and the process piping system.
  • Peristaltic pumps are designed to run dry, self-prime and offer a high suction lift (32 ft / 9.8 m). Their seal-less construction uses no mechanical seals or stuffing boxes, which can lead to fluid leaks.
  • Peristaltic pumps are easy to set up, operate and maintain without specialized training. These pumps do not require compressed air or rely on valves that can clog. The peristaltic pumping action is ideal for handling abrasive fluids and shear sensitive fluids.
  • Albin Pump manufactures a wide range of tube materials and sizes, along with drive-options, pump accessories and connections. Contact your local distributor to learn more about our replacement hoses and accessories.