A peristaltic pump operates on the principle of positive displacement, where a rotating shoe or roller compresses and decompresses a flexible hose or tube to create a seal. The decompression draws the fluid in, and as the rotor turns, the seal moves along the tube, displacing the fluid into the discharge line without the need for valves, seals, or glands. The liquid is totally contained within a flexible hose or tube fitted inside the pump casing. These would be the pump's only consumable part. All Verderflex pumps can be used in hygienic applications thanks to several food grade hoses and tubing. 

A peristaltic tube pump works by alternating compression and relaxation of a tube, drawing fluid in and propelling it away from the pump. A rotating shoe or roller passes along the length of the tube, creating a seal between the suction and discharge sides of the pump. As the pump’s rotor turns, this sealing point moves along the tube, displacing the product into the discharge line. The tube recovers after the pressure has been released, creating a vacuum that serves as the priming mechanism, drawing the product into the suction side of the pump. This results in a powerful self-priming positive displacement action. The Verderflex Rapide is an example of a tube pump, known for its compact design and ease of use, requiring no tools for tube changes, making it a cost-effective solution for industrial applications.