Ingersoll-Dresser Centrifugal Pump. Size: 1.5x1x6. Flow rate for new pum pis 150 gpm with required horsepower and pressure. Discuss with salesperson your process and product to determine if this refurbished pump should handle your specific duty. Impeller diameter: 6-1/4 in. Baldor motor, 5 hp, 3500 rpm, 11/5.5 amps, 60 Hz, 3 phase. Inlet: 1-1/2 in. flange port. Outlet: 1 in. flange port. Flange diameter (inlet/outlet): 5-1/2 / 4-3/4 in. (4) 5/8 in. mounting holes. Overall dimensions: 2 ft. 11 in. L x 1ft. 2-1/2 in. W x 2-1/2 in. H.(ACN42).