Used 34.3 Square Feet Metaullics Systems Co. L.P. (Carborundum) Impervious Graphite Shell & Tube Heat Exchanger. Shell rated 75 psi and full vacuum @ 340 F, tubes rated 75 psi and full vacuum @ 340 F. Type BEP 08-070 Series S Impervite. 88 ¼” OAL. (19) 1.25” tubes, 0.187” thick, (IMPERVITE (R)). (1) 3” service inlet, (1) 3” service outlet, (1) .75 NPT vent-b, (1) .75 NPT drain-e. Serial #7594, National Board #1341, Built 1992. Weight – 500 lbs. Previous Use: API Pilot Plant.