5/23/2023 0 Comments Peristaltic pump symbolHigh pressure peristaltic pumps are industrial grade pumps designed for high pressure pumping of aggressive sewage and slurries. These pumps usually have dry and non-reinforced casings and use rollers to provide the compressive force. Low pressure peristaltic pumps are laboratory grade pumps designed for low pressure pumping applications such as in IVs (medical fluids) and chemical metering. Peristaltic pumps are typically classified based on the pressure ratings they obtain. The design of these pumps is either rotary (circular) or linear. The media is moved through the tube with each rotating or oscillating motion. Once in the pump, the liquid is pushed through by compressing the tube at a number of points in contact with the rollers or shoes. By constricting the tube and increasing the low-pressure volume, a vacuum is created to pull the liquid into the tube. Peristaltic pumps consist of a tube which is squeezed by a set of rollers or shoes to move fluid. Peristaltic pumps are positive displacement pumps, meaning they use expanding and contracting chambers (in this case hosing) to move fluids at a fixed rate. To learn more about selecting different types of positive displacement pumps, visit the Positive Displacement Pumps Selection Guide page on Engineering360.
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