Used 2068 Sq Ft Roark Enterprises Inc. Horizontal Stainless Steel Shell & Tube Heat Exchanger. CS Shell rated 250 psig @ 300 F, -20 F @ 250 psig, 316L SS Tubes rated 150 psig @ 300 F, -20 F @ 150 psig; 796 Tubes x 3/4" x 16ga x 16' L. Serial #95-740, National Board #465, Built 1995. Approx. Weight - 15,000 lbs. Previous Use: Ethylene Oxide.