The 1/3 HP submersible sump pump from Superior Pump will move up to 45 gallons of water per minute and has a 1 1/2 FMPT discharge. This 1/3 HP sump pump is made of rugged cast iron for strength and durability and has a vertical automatic float on/off switch to keep it sleek while working in the narrow sumps. This pump is UL listed and has a powerful, yet energy efficient (4.1 amps) motor for longer life and durability.