Little Giant 523003 P-AAA Manual Submersible Recirculating Water Pump with 4.6 ft. maximum lift, Sump Pump for statuary fountains, water displays, air conditioners, machine tool coolants, 115 Volt 120 GPH WATER PUMP: Small submersible oil filled pump with corrosion resistant nylon housing. This compact pump features a 1/4 in. MNPT discharge, 4.6 ft. shut-off head capability, and screened inlet ADJUSTABLE FLOW RATE. Designed with a adjusting knob, allowing to adjust the water flow rate, the maximal flow rate can be up to 120GPH(300L/H) RECIRCULATING PUMP: For commercial, industrial and home applications uses, including statuary fountains, water displays, air conditioners, machine tool coolants, and many other applications where liquid must be transferred or recirculated CORROSION RESISTANT PUMP: The recirculating water pump has corrosion resistant nylon body. It has oil-filled motor and 30 watts SUBMERSIBLE WATER PUMP DIMENSION: The Submersible water pump is of opening size 7 x 5 x 7 inches. It is for submersible use only. It is designed for continuous duty.