A screw pump is a subset of positive displacement pump that use one or more than one screw , to perform pump action along its spindle axis . Three - spindle screw pumps are used for transport of viscous fluids with lubricating properties. They are suited for a variety of applications such as fuel-injection ,oil burners ,boosting, hydraulics ,fuel ,lubrication, circulating, feed and so on. screw pump manufacturers in Hyderabad.