1995 Murzan Drum Unloading System. Model: DUS-50. S/N: 9500008D Pump S/N: 95042360. Project No: D-9891. Inlets: (1) 3/8 in. dia. air fitting. With Capacities up to 60 gpm possible, the DUS-50 is the ultimate solution for emptying the most viscous materials from 55 gallon containers. The DUS-50 Utilizes a 316 stainless steel, sanitary Double-Suction Murzan Diaphragm pump mounted on a food grade plastic base plate and is fitted with a food grade scraper ring which cleans the inside of the container as it is emptied. Outlets: (1) 1 in. dia. exhaust. Overall dimensions: 60 in. L x 57 in. W x 68 in. H. (ACN280).