Used 675 Square Ft Phoenix Metallurgical Co. Titanium Shell & Tube Heat Exchanger. Stainless Steel (SA-240-317L) Shell rated 100 psi/FV @ 175 deg F, Tubes rated 230 psi/FV @ 100 deg F. (178) Titanium (SB-338-2) tubes x 3/4" OD x 0.035" ODX x 20'-0" LG with tube pitch 15/16". Shell is 19' 8 3/4" LG x 16" OD, OAL 23' 5 1/4", (8) Nozzles. Serial # 212, National Board #30, Year Built 1994.