A.Y. McDonald 22075J3 Thermoplastic Pump Motor & Control Box 5 GPM 0.75 HP 230V 3-Wire Single-PhaseA. Y. McDonald offers a full line of four inch submersibles ranging from 1 2 through 1 1 2 horsepower (HP), with flow rates ranging from 5 through 25 gallons per minute (GPM). The 22000 submersible offer peak capacity performance in 5, 7, 10, 15, 20 and 25 GPM models. All J Series Thermoplastic Pumps have a 1 1 4" discharge with internal check valve and sizes range from 1 2 to 1 horsepower (HP). Two or three wire models up to 1 horsepower (HP). A. Y.