HEAT EXCHANGER, SHELL & TUBE, 315 SQ/FT WITH 316 STAINLESS TUBES, SHELL, TUBE SHEETS & HEAD. (198) TUBES, 1/2" OD, 9' LONG, 18" DIA. SHELL. IS 10 PASS ON THE TUBE SIDE, U-TUBE CONSTRUCTION. RATED 125 PSI TUBE & SHELL SIDE @ 300 DEG F. SHELL SIDE HAS 2" & 3" FLANGED IN AND 2 @ 2" FLANGED OUT, TUBE SIDE HAS 2" TUBING QUICK CONECT IN/OUT ON REMOVEABLE HEAD. UNIT MFG BY REPCO ENG IN 1977, MDL 18-5-104, S/N 5179-2. UNDERWRITERS CODE STAMP, NO NATL BRD #. SHELL MEAS. 1/4" THICK, HEADS ARE 1.625" THICK. GOOD CONDITION.