Centrifugal Vacuum Pump

Right now also in centrifugal because of high rpm as it is Centrifugal Vacuum Pump directly coupled to engine the pump creates partial vacuum this means the liquid will certainly flow through vacuum hence the liquid will be recieved in the centrifugal pumps suction and since the impeller rotates the liquid will be displaced aside forward with a specific energy.

A vacuum pump gets the inlet hooked up to one or both valve covers, sometimes the valley pan. It SUCKS the atmosphere from the engine, thus reducing the air flow pressure build up created by blow because of combustion gases going at night piston rings in to the pan.