PEARL 4PWP18 Series - 18 GPM - 4" Submersible Pump - 1/2 HP - 115 Volts ( 2 Wires + Ground ) Multipurpose applications in the residential, agriculture and industrial markets. Typical Applications and Use • Potable water supply from deep wells • Agricultural-Irrigation, livestock watering, etc. • Municipal and Industrial • Pressure boosting • Fountains, etc • Irrigation and water transfer Standard Features of Pearl 4" Submersible Pumps • Continuous duty: Pearl submersible pumps can operate continuously without damage to any component • Impeller floating system: designed to guarantee the best performance and durability for sand handling • NEMA Standard motor adapter • Shaft for pumps with 19 and fewer stages are supplied with one shaft bearing. Shaft for pumps with more than 19 stages are supplied with 2 shaft bearings • Stainless steel check valves