Chemicals& Pesticides manufacturing processes are vacuum intensive and require single, two, three, and four stage ejector systems. Distillation, drying, flash cooling, stripping, and evaporation are among the processes that frequently take place at less than atmospheric pressure using phenol, ethylene glycol /ethylene oxide, ethyl benzene/ styrene monomer, amines, alcohols, and caprolactam are typical chemicals produced under sub-atmospheric pressure