Operating Centrifugal Pumps Safely

摘要

Following electric motors, pumps are the most widely used rotating equipment in the world. The two most common pump designs are centrifugal and positive displacement.rnExamples of positive-displacement pumps in our industry are air-operated diaphragm pumps, plunger pumps, rotary-lobe pumps, progressing-cavity pumps, rotary-screw pumps, and peristaltic pumps. While commonly used for return and waste activated sludge, high-solids, and shear-sensitive services, positive-displacement pumps are in the minority when compared to the existing population of centrifugal pumps.