EN ISO 17769-1:2012

Foreword
1 Scope
2 Terms and definitions
3 Comparison between specific energies
  and their corresponding heads
4 List of symbols and quantities
5 List of letters, figures and symbols used
  as subscripts for creating and defining
  symbols
Annex A (informative) - Figures for illustrating the
        definitions
Bibliography
Alphabetical index
French alphabetical index (Index alphabétique)
Russian alphabetical index
German alphabetical index (Alphabetisches Verzeichnis)

ISO 17769-1:2012 specifies terms, letter symbols and units related to the flow of liquids through rotodynamic and positive displacement liquid pumps and associated installations. It serves as a means of clarifying communications between the installation designer, manufacturer, operator and plant constructor. It identifies the units in common usage, but all additional legal units can be used.ISO 17769-1:2012 deals solely with conditions described by positive values for the rate of flow and pump head.