Used 80 Square Feet AstroCosmos Metallurgical, Inc.Tantalum Vertical Heat Exchanger / Condenser. Shell rated 150psi and full vacuum @ 350 F, tantalum tubes rated 150 psi and full vacuum @ 350 F. (102) 3/4" tubes x .015 ga (tantalum 2.5% w). Serial #67745, National Board # 930 Built 1999. Previous Use: API Pilot Plant. Drawing on file.