The Pressure Swing Adsorption Process (PSA process) is explained in detail with Animation in the Training Module which describes a typical Pressure Swing Adsorption Unit. In Refineries the primary requirement of the Pressure Swing Adsorption Process is for Hydrogen Purification. An intricate animation of the valve operation sequence covering the equalization, purge, dump, etc is covered with the pressure plotted against time in the pressure swing adsorption animation module.