"A velocity pump uses a spinning 'impeller' which has backward-swept arms. It is a type of pump in which kinetic energy is added to the fluid by increasing the flow velocity. This increase in energy is converted to a gain in potential energy (pressure) when the velocity is reduced as the flow exits the pump into the discharge pipe."
We gain strength. We lose power. Feel invited to our muscle play.
Something sneaks through and gets spoiled obviously.