Used 41 Square Feet Pfaudler Tantalum Horizontal Heat Exchanger. Shell rated 150 psi and full vacuum @ 450 F, tubes rated 150 psi @ 450 F. Type BEM 08-68. 98 1/2” OAL. (37) ¾” tubes, 0.015” thick, (Tantalum 2.5% w). (2) 2” inlet/outlet, (2) 3/4” vent/drain, (2) 4” inlet/outlet. Serial #J022726, National Board #49470, Built 1998. Weight – 425 lbs. Previous Use: API Pilot Plant.