Diaphragm Pumps are one type of pump that is not centrifugal in configuration. These positive displacement pumps are low volume pumps that are not limited to clear water: a diaphragm pump can also pump mud and trash. Honda Diaphragm Pumps are capable of running dry and pumping water with greater than 25% solids by volume. Perfect for slow seepage situations. You can count on Honda to keep the site dry. When you need a pump that needs to be able to run dry and can handle up to 2.4" solids this is the pump you need. This pump is also self-priming, saving you time and energy. At 80 gal./min you won't be able to pump as fast as trash pumps but it will clean up the messiest water/mud that trash pumps will not be able to move. Perfect when low volume, dry run capability is required.