NBN EN 12723 : 2000

Foreword
1 Scope
2 Normative references
3 General terms and definitions for pumps and
      installations
      3.1 List of symbols and quantities
      3.2 List of letters, figures and symbols used as
             subscripts
      3.3 General definitions
      3.4 Rates of flow
      3.5 Heights
      3.6 Heads
      3.7 Specific energy
      3.8 Cross-sectional areas
      3.9 Velocities
      3.10 Pressure
      3.11 Temperatures
      3.12 Powers
      3.13 Efficiencies
      3.14 Performance
      3.15 Speed and rotation
      3.16 Forces and loads
      3.17 Pumped liquid characteristics
      3.18 Miscellaneous terms
4 Special terms for rotodynamic pumps
      4.1 Rates of flow
      4.2 Heights
      4.3 Power
      4.4 Heads
      4.5 Cross-sectional areas
      4.6 Velocities
      4.7 Speed and rotation
      4.8 Performance
      4.9 Pump characterizing number
      4.10 Miscellaneous terms
5 Special terms for reciprocating and rotary positive
      displacement pumps
      5.1 Rates of flow
      5.2 Cross-sectional areas
      5.3 Velocities
      5.4 Pressure
      5.5 Volumes
      5.6 Forces and loads
      5.7 Efficiencies
      5.8 Miscellaneous terms
Annex A (informative) Figures for illustrating the definitions

Deals with terms, letter symbols and units relating to the flow of liquids through rotodynamic and positive displacement liquid pumps and positive displacement liquid pumps and associated installations. Provides a means of clarifying communications between the installation designer, operator, manufacturer and plant constructor. Identifies the units in common usage but all further legal units may be used. A definition of a liquid pump is included. Does not cover terms, letter symbols and units that refer to the component parts of rotodynamic and positive displacement pumps and installations.