A big advantage to trash pumps over diaphragm pumps is their increased pumping speed. Trash pumps require priming and a plastic priming plug is located in the top of the pump so that you can dump a bucket of water down into the pump cavity. Once the impeller area is wet the pump will lift the water through the suction hose and spit it out the discharge. All water pumps work on the principal of creating a vacuum in the suction hose and allowing atmospheric pressure to force the water into the suction hose and up to the impeller. This limits the suction hose length to 20', or else the atmospheric pressure won't be enough to lift the water into the pump. Once the water hits the impeller, the engine's power can send it hundreds of feet if, needed so discharge hose length isn't a problem.
Our 3" Trash Pumps are rated at 25,000 GPH. The maximum head (vertical lift) of the discharge hose is rated at 90' but the
higher the head, the less water flow you will have. These units have a 1.58-gallon fuel tank which takes regular unleaded
gasoline, and they'repowered by 8HP Honda commercial engines. Twenty feet of suction hose is included with every pump.
Discharge hose is available in various lengths and rented separately.