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Introduction to Peristaltic Pumps

Peristaltic pumps, also known as roller pumps or hose pumps, are among the most advanced types of positive displacement pumps. Their operating mechanism is based on "occlusion," where a flexible hose or tube (made of materials like silicone, NR, CSM, or EPDM) is compressed within a housing by rollers attached to a rotor. As the rotor turns, this mechanical pressure pushes the fluid forward while simultaneously creating a vacuum behind the roller, enabling powerful self-priming capabilities. The concept is inspired by biological peristalsis—the involuntary muscle contractions that move food through the human digestive tract. The most significant feature of this system is total isolation: the fluid never contacts mechanical parts, seals, or rollers, eliminating risks of leakage and contamination. These pumps are capable of running dry without damage and are ideal for everything from delicate biological materials to the harshest mineral slurries.

History of Peristaltic Pumps

The invention of the hose pump dates back to the early 20th century, driven by the medical need for a safe system to transfer blood and sensitive fluids. In 1932, Renald Heart in England developed the first commercial model, revolutionizing laboratory equipment. However, widespread industrial use began in the 1950s as heavy chemical industries sought pumps capable of handling corrosive and viscous materials without frequent failure. From the 1980s onwards, the introduction of fiber-reinforced hoses significantly increased their capacity to handle high pressures (up to 18 bar). Today, advancements in smart polymers and digital control technology have led to ultra-precise models, such as programmable stepper motor pumps and intelligent variable speed drives, which play a crucial role in modern industrial automation.