1.5 HP Submersible Water Pump 4500 GPH High Flow Submersible Water Pump to Remove Clean/Dirty Water for Pool, Pond, Hot Tub, Flooded Rain Barrel Powerful Pump with Stable Performance: This item is manufactured with high impact corrosion resistant plastic, the 1.5 HP sump pump moves up to 4500 gallons per hour and tackles any drain job in a fraction of the time. Automatic float switch: Start and stop automatically. When the water level is below 1-1/2 inches, it will automatically disconnect the power; When the water level rises above 7 inches, the pump will start again. Manual Water Pump: When the float switch is locked on the pump, the pump will work all the time and the power will not be turned off automatically, it will be cut off immediately when the pump does not pump water to prevent dry running. Easy to Connect Hose: 3 different diameter outlets (NPT 1-1/2", GHT 3/4", Dia. 1-1/2") to fit different size hoses as needed according to the flow rate. The higher the flow, the wider the outlet should be. *This item is not suitable for working with expandable hoses. 【Application Occasions】Ideal for draining clean or dirty water from any enclosed environment, such as basements, warehouses, flooded basements, flat roofs and more, but not for applications involving corrosive or flammable liquids. This sump pump with a suction screen at the bottom can remove water to within 1-1/2 inches of the floor and allows 1/5-inch grit to pass under the application of clean water. #20/50/70 g216#12 AMA 99