Get current pricing for Itt Standard, SS Shell & Tu Approx. 15 Square Ft Heat Exchanger. Cs Shell Rated 225 Psi @ 450 Deg F. 316-ss Tubes Rated 150 Psi @ 450 Dceg F. 5 Od Shell. Oal-30. (80) Tu . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: