Used 2852 Sq Ft Advanced Process Systems Inc. Horizontal Stainless Steel Shell & Tube Heat Exchanger. CS Shell rated 75 psi @ 175 F; 38" Diameter. Tubes 316L SS rated 225 psi @ 175 F; (908) Tubes x 3/4" Diameter 16' ga x 15/16" pitch x 16' L. Mounted on two saddles, Serial #83007, National Board #4, Built 1983. Approx. Weight - 17,500 lbs. Previous Use: Ethylene Oxide.