Pressurization or pressurisation is the application of pressure in a given situation or environment. Industrial Industrial equipment is often maintained at pressures above or below atmospheric. Atmospheric This is the process by which atmospheric pressure is maintained in an isolated or semi-isolated atmospheric environment (for instance, in an aircraft, or whilst scuba diving). See also Cabin pressurization Compressed air Decompression (diving) Decompression (physics) Gas compressor :Category:Units of pressure Pressurisation ductwork Pressure it:Pressurizzazione (aeronautica)