Many chemical processes are vacuum intensive and require single, two, three, and four stage ejector systems. Vacuum systems can be implemented for a variety of purposes, including evaporation, distillation, drying, degassing, and extraction to produce a wide range of compounds. Vacuum systems are often used to remove gases and other contaminants from the process vessels, improve reaction rates and yields, and facilitate the separation of products at sub-atmospheric pressure, while simultaneously evacuating any water or by-product gases produced during the reaction.