Used 392 Sq Ft C276 Hastelloy Vertical Shell and Tube Heat Exchanger. Manufactured by RAS Process Equipment Inc. (335) .75"OD C276 Hastelloy tubes rated 150psi @400F. CS Shell rated 150psi @400F. (2) Lug mounted. 96"OAL x 37"W. Serial #981464-01. National Board #897. Built 1998. U-Stamp.