Working of a Peristaltic Pump
A peristaltic pump primarily consists of two main components:
- The Peristaltic Hose
- The Rotor with Rollers or Shoes
As the rotor rotates, it compresses the peristaltic hose using its rollers (typically two, though some designs feature three). On the downstream side—also known as the pressure side—the fluid is pushed forward by the rollers’ motion. On the upstream side—referred to as the suction side—the movement of the rollers creates a vacuum that draws fluid from the storage tank into the hose.
The pressure generated on the downstream side by the rotor’s rotation typically ranges between 5 to 6 bar, but can reach up to 10 and even 16 bar in certain applications.
The rollers (or shoes) apply sufficient force to nearly flatten the hose, creating a near-perfect seal that prevents fluid backflow. This action simultaneously generates a vacuum on the suction side, with pressures typically between 0.4 to 0.8 bar making peristaltic pumps self-priming.
If your application involves self-priming particularly, I suggest you review the NPSH available to ensure adequate pump operation.
More about how to calculate the available NPSH or the level of liquid required.
Peristaltic pumps offer the advantage of precise fluid handling, making them ideal for applications requiring accurate dosing, handling of viscous fluids, or the transfer of sensitive materials without contamination.
SPS Pumps is There to Help
SPS Pumps is known for its engineering excellence in industrial pumps, especially peristaltic pumps. We combine technical expertise with support, ensuring you receive reliable and efficient systems tailored to your needs.
SPS Pumps offers a large range of spare parts for all peristaltic pump brands, out of stock, helping you keep your pumps working well and avoid downtime.
SPS Pumps is your trusted partner for success and long-term reliability.
Call now at +32 2 657 23 53 or email us at info@sps-pumps.com.
