Historical
IEC 60534-1 Ed. 3.0 b:2005
Industrial-process control valves - Part 1: Control valve terminology and general considerations
applies to all types of industrial-process control valves (hereinafter referred to as control valves). This part establishes a partial basic terminology list and provides guidance on the use of all other parts of IEC 60534
International Electrotechnical Commission [iec]