Does not over pressurise simple design lower degree

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Does not over pressurise. Simple design. Lower degree of haematosis compared to roller pump. Smaller configuration compared to centrifugal pump. Relatively low power needed Disadvantages High degree of haematosis Pump failure may cause retrograde flow. Sensitive to inlet and pressures Prone to cavitation. Type of flow Low volume with high pressure Low volume with high pressure Low flow with high pressure High flow with low pressure Cost Low High Low High