This course is designed to introduce participants to the fundamental operating principles of single-stage and multistage centrifugal pumps. After completing this course, participants should be able to describe the general operating principles of a centrifugal pump. Specifically, they should be able to describe the differences between radial, axial, and mixed flow pumps; describe the basic operation of a vertically mounted pump; and describe the basic operation of a multistage pump. Participants should also be able to describe various types of impellers used in centrifugal pumps and to describe the purpose and the basic operation of a mechanical seal flush system.