Used Alfa Laval Spiral Heat Exchanger, Type ALSHE-LTL-13S, Approximate 145 Square Feet, 316L Stainless Steel. Channel A volume 50 liter rated 10.3 bar (149 psi) at 149 degrees C. (300 F), Channel B volume 70 liter rated 10.3 bar (149 psi) at 149 degrees C. (300 F). National Board# 276, serial# 30112-76813, built 2011.