Has a propeller-type of impeller running in a casing. The pressure is developed by the flow of liquid over the blades of impeller.
Trash Pumps are a type of self-priming centrifugal or submersible centrifugal pump designed to handle rocks and other solids while dewatering. Trash Pumps are able to handle large amounts of water with debris such as sand, silt, and trash. Trash Pumps are specifically designed to clear out areas where unwanted water and debris happen to accumulate. Trash Pumps are usually portable or on a trailer in order to be transported quickly when needed. These pumps are designed to provide maximum discharge flow and pressure with inlets for debris absorption. They can be powered by electric motors, gas or diesel engines, or compressed air.