What is the difference between a trash pump and a centrifugal pump?
Both pumps are technically centrifugal pumps. The difference is that a trash pump is designed with an impeller and volute that will pass certain size solids. Trash pumps are great for dewatering main break sites, pumping muddy or sludge-filled water, etc. The down side of a trash pump is that it is not as efficient as a standard centrifugal pump, and usually will not have the capacity or TDH capability as the same size centrifugal pump.