Waukesha Positive Displacement Pump. Model no. 30. Flow rate for new pump is 30 gpm with required horsepower and pressure. Discuss with salesperson your process and product to determine if this refurbished pump should handle your specific duty. Serial no. 1379 SS. Reliance Electric motor: 3 hp,1730 rpm, 230/460 v, 9.2/4.6 a, 60 Hz, 3 phase. Reliance Electric drive: 9.3 ratio, 450/45 output rpm speeds. (2) 4-3/8 in. stainless steel rotors. Inlet/outlet: (2) 1-1/2 in. S-line. Overall dimensions: 3 ft. 6 in. L. x 1 ft. 3 in. W. x 3 ft. 5-1/2 in. H.