Get current pricing for Heat Exchangers Inc, 690 Sq. Ft. Heat Exc 690 Sq. Ft. Stainless Steel Horizontal Shell And Tube Heat Exchanger. Cs Shell Side Rated 75 Psi @ 300 Deg F, 304-ss Tubes Rated 100 Psi @ 150 De . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: