Used Doyle & Roth Model VT861-3VE 32 Square foot vertical heat exchanger Hastelloy C276 tubes rated full vacuum/150 PSI @ 347 Deg. F. 316L stainless steel shell rated 150 PSI/full vacuum @ 347 Deg. F. Lug Mounted. Built 2000. S/N J9290-6, NB 19063. Estimated weight 315#.