Condenser/shell and tube heat exchanger, 3,255 square foot surface area of tubes, the tubes are an exotic stainless that is better than 316 s/s, sb676-al-6xn. The shell is 316L. The tubes are 18 gauge, there are 1,040 of them, the diameter of the shell is 38 in., the design pressure is 89 psi on the tube side at full vacuum and 219°F, and 15 psi on the shell side at full vacuum.