TS EN ISO 17769-1

TS EN ISO 17769-1 is the standard for the general terms, definitions, quantities, letter symbols and units used in the context of liquid pumps and their associated installations. Its purpose is to give engineers, manufacturers, operators and plant constructors a common technical language for describing pump-related quantities and flow conditions.

A common language for pump terminology

The standard addresses terms connected with the flow of liquids through rotodynamic and positive displacement liquid pumps, together with associated installations. In general technical use, this distinction matters because rotodynamic pumps transfer energy through continuous interaction with the fluid, while positive displacement pumps move a defined volume through repeated mechanical action. That difference shapes how people discuss flow rate, pump head and other related quantities.

What the scope clearly includes

• Terms, letter symbols and units for liquid-pump and installation vocabulary.
• Commonly used units, while allowing additional legal units to be used as well.
• Conditions described only by positive values for flow rate and pump head.
• Communication between the designer, manufacturer, operator and plant constructor.

In practical engineering work, this kind of vocabulary standard supports consistent drawings, specifications, manuals and discussions across different organizations. It is best understood as a terminology and notation reference rather than as a design, performance or test-method standard. For anyone working with pumps, the value lies in reducing ambiguity when describing system layouts, operating points and measurement-related quantities.