Wayne SWS50-12P 1/2 hp Shallow Well Jet Pump Conventional 12 gallon Tank System 1/2 hp shallow well system with 12 gallon horizontal tank 1/2 hp; max. Flow rate is 420 gallons per hour; (50 psi) 3/4 in. Npt discharge with 1-1/4 in. Suction Dual voltage (120V/240V) high efficiency square flange motor (factory set for 240V) Pressure switch is pre-set at 30-50 psi for automatic operation