Technical Knowledge 5 Questions Ask question Search Order By: NewTagClear Filter How does a pressure gauge ( discharge & suction ) behave in a crude oil tanker? how to make best use of it in order to decide correct use of centrifugal pump from bulk discharge to stripping level? Is it OK to load the cargo through the Framo pump instead of drop line? What is a Positive displacenent pump? What is propeller drop ? What is the difference between a centrifugal pump and positive displacement pump from operational point of view ?