The Stanley TP03 Submersible Trash Pump boasts 450 gpm of output flow, this pump is an efficient way to move large volumes of liquid with concentrations of solids up to 25% by volume. The TP03 handles solids up to 3 inches in size and is used for dredging and light cleaning tasks. The urethane bowl and impeller is abrasion resistant, resilient and impervious to petrochemical solvents. No priming necessary, just drop it into the material and it's ready for work. The urethane bowl is virtually indestructible - tough, lightweight, abrasion resistant, resilient and impervious to petrochemical solvents. The Stanley TP03 can pump almost anything without damaging the bowl. The Stanley TP03 Submersible Trash Pump's efficient design places the urethane impeller above material flow, reducing blockage, jamming and overall pump wear while keeping liquids moving fast enough to pump high volumes of solids at a much higher head than non-submersible pumps. For easy maintenance and inspection, simply remove the wing nuts and top plate, clean out the bowl and replace the cover and nuts. You're back to work in less than 5 minutes. The TP03 can run dry without damaging motor or impeller, reducing the possibility of downtime.