Peristaltic pumps work by reduction of a volume within a tube by a series of rollers.
· Dry running
· Flow regulation
· Excellent for use with viscous or aggressive media
· Tolerant to contamination with particles
Fluid is forced through tubing by a number of rollers, that rotate squeezing a flexible tube against the pump housing. As the roller moves over and past a point on the tubing, it expands to allow more fluid to enter. During operation, there is at least one of the rollers in contact with the tubing at all times, therefore eliminating the need for valves to prevent backflow.