Vilter 4416 16-Cylinder Reciprocating Compressor. Model: 4416. Refrigerant: last used with R-717 (ammonia). Nominal capacity: 186 tons at 203.5 bhp with a 96.2ºF condensing temperature and a 20ºF suction temperature. Displacement: 619 cfm. Max speed: 1,200 rpm. Liquid-cooled heads. Inlets: (1) 1-1/2 in. dia. liquid port, (1) 6 in. dia. refrigerant suction port. Outlet: (1) 1 in. dia. NPT (liquid), (2) 3 in. dia. refrigerant discharge ports. Overall dimensions: 6 ft. 7 in. L x 3 ft. 6 in. W x 6 ft. 3 in. H. (ACN387a).