Peristaltic pumps are a type of positive displacement pump that use rotating rollers or shoes to compress and release a flexible tube, creating a pumping action. They are known for their gentle pumping action, ability to handle abrasive or viscous fluids, and ease of maintenance.

Here are some common types of peristaltic pumps:

  1. Hose or Tube Peristaltic Pumps: This is the most common type of peristaltic pump. It consists of a flexible tube or hose that is squeezed by rotating rollers or shoes. As the rollers compress the tube, it creates a vacuum effect, drawing fluid into the pump. As the rollers release, the tube rebounds, pushing the fluid forward. These pumps are versatile and can handle a wide range of fluids and viscosities.
  2. OEM Peristaltic Pumps: OEM (Original Equipment Manufacturer) peristaltic pumps are compact and often used as components in larger systems or equipment. They are designed to be integrated into specific applications such as medical devices, analytical instruments, or laboratory equipment. OEM peristaltic pumps are typically smaller and have lower flow rates compared to larger industrial peristaltic pumps.
  3. Industrial Peristaltic Pumps: Industrial peristaltic pumps are larger pumps designed for heavy-duty applications in industries such as mining, wastewater treatment, chemical processing, and food and beverage. They have higher flow rates and are capable of handling more demanding conditions and fluids.
  4. Dispensing Peristaltic Pumps: Dispensing peristaltic pumps are used for precise and controlled dispensing or dosing of fluids. They are commonly used in laboratory settings, pharmaceutical production, and chemical processing, where accuracy and repeatability are critical.
  5. Peristaltic Pump Modules: Peristaltic pump modules are modular units that can be integrated into automated systems or equipment. They offer flexibility in terms of flow rates, tubing materials, and control options. These modules are often used in applications such as fluid handling in bioprocessing, diagnostic equipment, or industrial automation.

It’s important to note that within each type, peristaltic pumps can vary in terms of their design, materials, flow rates, peristaltic pump types control options, and other features. When selecting a peristaltic pump, it’s essential to consider factors such as the required flow rate, compatibility with the fluid being pumped, tubing material options, accuracy requirements, maintenance needs, and any specific application considerations.

What does a peristaltic pump do?

A peristaltic pump is a type of positive displacement pump that operates by using rotating rollers or shoes to compress and release a flexible tube, creating a pumping action. The primary function of a peristaltic pump is to transfer fluids from one location to another by squeezing and releasing the flexible tube in a rhythmic manner.

Here is a breakdown of how a peristaltic pump works and what it does:

  1. Tube Compression: The peristaltic pump consists of a flexible tube or hose that is positioned between the pump’s rotating rollers or shoes and a fixed housing. As the rollers or shoes rotate, they press against the tube, compressing it at a specific point. This compression creates a seal and moves along the length of the tube.
  2. Fluid Suction: As the compression point moves along the tube, it creates a vacuum effect behind it. This vacuum draws fluid into the tube through an inlet or suction port, filling the space left behind by the compression.
  3. Fluid Discharge: As the rotating rollers or shoes continue to move, the compression point releases, and the tube rebounds to its original shape. This action pushes the fluid forward within the tube, towards the outlet or discharge port of the pump.
  4. Gentle and Controllable Flow: The peristaltic pump’s pumping action is inherently gentle, as the fluid is only in contact with the flexible tube and does not come into direct contact with any pump components. This makes peristaltic pumps suitable for handling delicate or shear-sensitive fluids without causing damage or degradation.
  5. Reversible Flow: Peristaltic pumps can often operate in either direction, allowing for reversible flow. By reversing the rotation of the rollers or shoes, the pumping action can be reversed, enabling fluid to be drawn back or redirected.
  6. Fluid Compatibility: Peristaltic pumps can handle a wide range of fluids, from clean and pure liquids to viscous, abrasive, or corrosive substances. The choice of tubing material can be selected to match the specific fluid being pumped, ensuring compatibility and preventing contamination or chemical reactions.
  7. Maintenance and Cleanability: Peristaltic pumps are relatively easy to maintain and clean. Since the fluid only comes into contact with the flexible tube, the pump head and other components remain untouched, reducing the risk of cross-contamination. The tube can be easily replaced or cleaned, simplifying maintenance and avoiding downtime.

The unique pumping mechanism of peristaltic pumps makes them suitable for a variety of applications, including pharmaceutical and biotech processes, laboratory experiments, chemical dosing, food and beverage production, wastewater treatment, and more. Their gentle pumping action, precise control, and compatibility with various fluids make them a popular choice in industries where accuracy, reliability, and cleanliness are crucial.

peristaltic pump types