Carlyle 12-Cylinder Reciprocating Compressor. Model: 5H120 B103. S/N: 91D1 5551. Capacities: 74.0 Ton (R-12, R-134), 119 Ton (R-22), 122.0 Ton (R-502), 115.47 Ton (R-507/404A), (40°F saturated suction, 105°F saturated discharge, 15°F superheat, 0°F subcooling). Refrigerants: R-12, R-124a, R-22, R-502, R-507/404A. Nominal horsepower: 75 hp (R-12, R-134a), 125 hp(R-22, R-502, R-507/404A). Displacement @ 1750 rpm: 276.8 cfm. Maximum speed: 1750 rpm. Minimum speed: 400 rpm (lubrication), 900 rpm (unloader action). Compressor weight: 1580 lbs. Shaft diameter: 2 in. Henry Technologies Pressure Relief Valve. Inlets: (1) 4-1/8 in. dia. flanged port. Outlets: (1) 4-1/8 in. dia. flanged port. Overall dimension: 4 ft. 2 in. L x 2 ft. 3 in. W x 2 ft. 10 in. H. (ACN134)