To define control valve inherent flow characterization and inherent rangeability, and to recommend allowable deviations from characterizations curves which are described mathematically or graphically.


To establish guidelines for the user and control valve manufacturer, to promote uniformity with respect to specifying and testing for flow characteristic and rangeability.

A Word from the Chairman

The committee recently approved and published the revised ANSI/ISA-75.11.01-2013\, Inherent Flow Characteristic and Rangeability of Control Valves.

For information about ISA75.11--and other upcoming ISA75 and ISA96--meetings, please visit the ISA75 page.

For more information, please contact

Eliana Brazda
ISA Standards Administrator
(919) 990-9228