Used 96 sq. ft. Cosmos shell and tube heat exchanger, tantalum tubes and tube sheets with (83) 3/4" diameter x 72" long tubes rated 150 PSI and full vacuum @ 350 degrees F, carbon steel shell rated 150 PSI and full vacuum @ 350 degrees F, hastelloy C-2000 heads rated 150 PSI and full vacuum @ 350 degrees F, 12" diameter x 72" long tube bundle, 6" tubes inlet/outlet, 2" shell inlet/outlet, serial no. 13195-2, National Board no. 257.