This handbook on control valve sizing is based on the useof nomenclature and sizing equations from ANSI/ISAStandard S75.01.01 and IEC Standard 60534-2-1.Additional explanations and supportive information areprovided beyond the content of the standards.The sizing equations are based on equations for predictingthe flow of compressible and incompressible fluidsthrough control valves.The equations are not intended foruse when dense slurries, dry solids or non-Newtonianliquidsare encountered.