Pharmaceutical engineering involves various processes and equipment essential for drug manufacturing and development. The flow of fluids, governed by principles like Reynolds number and Bernoulli's theorem, includes measuring devices like manometers, orifice meters, and Venturimeters, ensuring efficient fluid dynamics. Size reduction and separation are crucial for achieving the desired particle size, employing devices like hammer mills, ball mills, and sieve shakers. Heat transfer and evaporation processes, utilizing equipment such as heat exchangers and multiple effect evaporators, play a vital role in drug formulation. Distillation and drying methods, including simple distillation and tray dryers, ensure the purity and stability of pharmaceutical products. Additionally, mixing, filtration, and centrifugation techniques, alongside corrosion-resistant materials, are fundamental in optimizing production and maintaining equipment longevity in pharmaceutical plants.