2000 Buffalo Pumps Can-O-Matic II Ammonia Pump. Model: HCR Can-O-Matic II. Size: 3x2x13. Flow rate for new pump is 300 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: 13 in. Motor: 10 hp, 1750 rpm, 460 v, 15.5 a, 60 Hz, 3 phase. Inlets: (1) 3 in. dia. flanged port. Outlets: (1) 2 in. dia. flanged port. Overall dimensions: 2 ft. L x 2 ft. W x 2 ft. H.(ACN76a).