Used 2530 Sq Ft Roark Enterprises Carbon Steel Horizontal Shell & Tube Heat Exchanger. Shell rated 75 psig @ 150 F, Tubes rated 75 psig @ 150 F, mounted on 2 saddles. (806) Tubes x 3/4" OD x 16' L x 0.085" ga. Serial #93440, National Board #334, Built 1993. Previous Use: Ethylene Oxide.