Peristaltic pumps are a type of positive displacement pump used to transfer fluid. The concept is simple: an internal spinning rotor pushes liquid out through a tube. With no small, internal parts or valves that could cause clogging issues, these pumps are well-suited to performing the gentle, unpressurized transfer of fluids having high levels of particulate. Items vary by features and inclusions, dimensions, voltage, maximum pressure, fixed or adjusted rate, metering and precision capability, motor RPM, agency standards, and other considerations. Pumps for similar applications include diaphragm pumps, chemical metering pumps, rotary pumps, and flexible impeller pumps.