Used 3088 Sq Ft 316L Stainless Steel Shell and Tube Heat Exchanger. Manufactured by Hughes-Anderson Engineering Corp. 304 SS Shell MAWP 150PSI/FV @315F. (796) .75" 316L SS Tubes MAWP 135PSI@150F. Nozzles: (2) 10", (1)12". (2) saddle mounted. National Board # 3432. Serial #6250. Built 1989.