Used 690 Sq.Ft. Shell and Tube Heat Exchanger. Enerquip Sanitary 304L Stainless Steel. TUBES: Approx (178) 3/4" x 239" (8) Pass rated 150 PSI @ 375 Deg.F. SHELL is 18" Dia. rated 150 PSI @ 375 Deg.F. Tube inlet/outlet 2.5". Shell inlet/outlet 4". Built to 3-a Dairy Standard. Exterior side finish 40 Ra max. Product side finish 32 Ra max. Built 2014. S/N: 16567. NB# 14297.