Buffalo Can-O-Matic II Ammonia Pump. Model: HCR. S/N: 87440532. Size:H66V-2013. Capacity: 53 gpm @ 75 thd. Peerless Winsmith Motor, 10 hp, 1750 rpm, 460 V, 17.8 amps, 60 Hz, 3 phase. (1) 9 in. dia. impeller. Buffalo HCR-series pumps are single suction, single stage, hermetic centrifugal pumps designed for Zero Mfg. Co leakage by elimination of the pump stuffing box. These pumps are equipped with uniquely designed motors. Inlets: (1) 3 in. dia. flanged inlet. Outlets: (1) 1-1/2 in. dia. flanged outlet. Overall dim: 2 ft. L x 1 ft. 6 in. W x 1 ft. 9 in. H.