New control valve terminology standard

ISA75, Control Valve Standards, has completed a revision of ISA-75.05.01, Control Valve Terminology. The standard provides a glossary of definitions commonly used in control valve applications across industry. The standard includes a number of new or significantly revised terms, including backlash, cage guiding, intelligent/smart positioner, quick change trim, globe valve body, hysteresis, port guiding, and post guiding.

ISA75 is chaired by James Young of the Dow Chemical Company. For information on ISA75, contact Eliana Brazda, ISA Standards, For information on viewing or obtaining ISA-75 standards and technical reports, visit

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