Below is a list of Vertical Pumps manufacturers from Oakland, California. A vertical pump uses centrifugal force to convert mechanical energy into kinetic energy and increase the pressure a liquid as it travel upwards through a pipe. Because liquids are almost impossible to reduce in volume, they cannot be pressurized and therefore must be transported through other means. Centrifugal force causes substances including liquids to move away from their center of rotation; this force can be controlled and used to lift and convey liquid.