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Tubing for peristaltic dosing pumps

By Chemical Engineering |

Peristaltic pumps work by compressing a tube against a circular pump housing with rollers on a rotating arm. The fluid that is ahead of the roller gets pushed forward, while new fluid is drawn into the tube by the vacuum generated as the tube returns to its relaxed state. Peristaltic pumps are a type of positive displacement pump that can be used in industrial chemical dosing applications and others, including medical applications. The tubing used to convey the material into and out of the pump mechanism is a critical aspect of pump performance. The following are considerations for selecting tubing materials for use with a peristaltic pump. Advantages and disadvantages As dosing pumps, peristaltic-based systems have a number of advantages, along with some limitations (Table). Reducing the risk of contamination by pump components is a distinct advantage of peristaltic pumps, but the flow is non-uniform, which can present problems in certain applications requiring continuous flow. Advantages and disadvantages of peristaltic pumps Advantages Disadvantages • Dosing accuracy is high, and is not affected by line pressure and fluid viscosity • Maintenance can be minimal due to the absence of valves, seals, pipework,…
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