Get current pricing for Alfa Laval, Alfa Laval 640 SQ. F 640 Sq. Ft. Plate Heat Exchanger, 150 Psig @ 200 Degrees F. Mfg. By Alfa-laval. Ser. #30102-84991 Built 1995. Tema Type- P31-sd. (2)4 Inlet, (2) 4 O . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: