The flow through a typical Diskflo pump is shown in this drawing. The rotary disks accelerate the fluid gently. As the fluid accelerates it moves to the outside of the disks, into the casing and out the outlet port. Fluid in the Discflo pump travels in a spiral as it gains kinetic energy before being discharged. Fluid further and further from the disks travels more and more slowly.
Output is very smooth and nonpulsating.
Nikola Tesla's Turbine Pump is a forerunner of this pump. Discflo also offers several vertical configurations including submersible models. This clip has been recycled to continuously loop. Up to a point, changing the speed of the pump would have approximately the same effect as changing the speed of the animation.