Used 15 Square Feet Pfaudler Tantalum Horizontal Heat Exchanger. Shell rated 150 psi and full vacuum @ 450 F, tubes rated 150 psi @ 450 F. Type BEM 06-48. 68 5/8” OAL. (19) ¾” tubes, 0.015” thick, (Tantalum 2.55% w). (2) 3” inlet/outlet, (2) 1-1/2” inlet/outlet, (2) 1” vent/drain. Serial #J040813, National Board #50300, Built 2000. Weight – 285 lbs. Previous Use: API Pilot Plant.