Temperature and Size Selection for Peristaltic Pump Tubing

Peristaltic pumps are becoming increasingly popular due to their non-polluting pumping characteristics and minimal maintenance requirements. However, when designing or purchasing a peristaltic pump system, many engineers often overlook an important component, which is the peristaltic pump tubing.

Temperature of the peristaltic pump tubing

The working temperature range of the peristaltic pump tubing is another important factor that needs to be considered. Some materials, such as silicone rubber, have a wide temperature range, making them suitable for both high and low temperature processes, while other materials are only suitable for a small temperature range. Before selecting a tube material, users should first determine the high and low temperatures in the system, and then ensure that the selected peristaltic pump tubing can safely work within this temperature range. In applications where the temperature needs to be gradually increased, users should consider the impact of temperature on the chemical resistance and pressure resistance of the peristaltic pump tubing. As the temperature increases, the pressure resistance of the peristaltic pump tubing will decrease.

Size of the peristaltic pump tubing

As each roller in the pump head passes over the pump tubing, a certain amount of fluid is pumped by the peristaltic pump, so the size of the peristaltic pump tubing directly affects the pumping flow rate, which means it has a significant impact on the operation of the fluid delivery system. The pump tubing is a key part to consider when designing a high-quality peristaltic pump. The optimal size or range of sizes of the peristaltic pump tubing needs to be calculated. The size mainly refers to the inner diameter and wall thickness of the tube. The inner diameter determines the amount of fluid pumped by each rotation of the rotor, while the wall thickness determines the ability of the tube to restore its original shape after each compression. This ability largely affects the service life of the tube. You may also be interested in Preventive Maintenance of Peristaltic Pump Tubing

If the size of the peristaltic pump tubing is too small relative to the size of the pump head, the pump head cannot clamp the tube, and the tube will be pulled out of the pump head. If the tube size is too small, the rollers in the pump head cannot press the tube, which will result in insufficient or completely ineffective pumping flow rate. If the tube size is too large, excess tube material will generate creases between the rollers and the pump housing or between the rollers and the bite bed, leading to premature wear and failure. When selecting the size of the peristaltic pump tubing, users should follow the recommendations of the peristaltic pumps manufacturers to ensure that the system functions well. In some applications where high precision is required (such as chemical metering pumps), the role of tube size is even more prominent. Even though some manufacturers offer peristaltic pump tubings that are "close" or "seemingly the same" as the recommended size, there is often still a difference. To ensure the best performance and working accuracy of the pump system, users should use peristaltic pump tubings that are exactly the same as the manufacturer's recommended size.