Used 217 sq. ft. horizontal graphite cylindrical block heat exchanger. MFD by Carbone, type 1640-625/25,type BEM. Serial # 11117, NB# 1299, built 1998. ASME code stamped for 100 psi & FV @ -20/+400 deg. F on tube side, 150 psi @ -20/+400 deg. F. Shell 22" dia. x 86 9/16" long. Single pass process side. Openings: Shell - 1-3", 2-2". Tube side - 1-6", 1-3". Mounted on legs.