Used Alfa Laval thermal horizontal Spiral Heat Exchanger, 1280 square feet, 316L stainless steel product contact areas. Shell rated 150 PSI at 200 deg F. Tubes rated 150 PSI at 250 deg F. Carbon steel removable heads with 316L stainless steel clad. Openings: hot side (2) 4", cold side (2) 4". Mounted on carbon steel saddles. Built 1990. S/N: 19737, NB# 14597.