2006 Buffalo Can-O-Matic Centrifugal Ammonia Pump. Model: HCR I. Size: AB6. Maximum flow rate for new pump is 200 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: 5-1/4 in. Motor, 3 hp, 3500 rpm, 230/460 V, 9.1/4.6 amps, 60 Hz, 3 phase. Inlets: (1) 3 in. dia. port. Outlets: (1) 1-1/2 in. dia. port. Overall dimensions: 1 ft. 7 in. L x 9 in. W x 1 ft. H. (ACN87)