The factor with the greatest influence on pump tubing life is the pump rpm rate. As the tubing is impacted by the rollers, it is compressed, squeezed and then released to allow for recovery and a repeat of the flexing cycle. Various tubing materials exhibit different degrees of resistance to this flexural fatigue. The number of impacts a given tubing is able to withstand is finite. Therefore, tubing life expectancy is based on rpm’s and the number of rollers in the pump head. |