Multiple effect evaporation systems for bulk drugs, chemicals and distilleries. RDPC offers multiple effect evaporation plants to utilize the low pressure spent steam and to recover the valuable chemicals. The vapors produced in the first effect are utilized as the heating medium for the second effect and so on. This effectively reduces the steam consumption. A temperature gradient of about 7 to 100 is maintained between each stage for maximum efficiency of collection. A typical line diagram for the multiple effect evaporation system is shown. Evaporators with condensers can be made in mild steel / stainless steel.