ISO 17769:2008涉及与液体通过旋转动力和容积式液体泵及相关装置流动相关的术语、字母符号和单位。它是澄清安装设计师、制造商、运营商和工厂建造商之间沟通的一种方式。 ISO 17769:2008确定了常用单位，但可以使用所有其他法定单位。 ISO 17769:2008仅涉及流量和泵头的正值所描述的条件。这些定义首先显示了数量的最常见形式，其次是一些常用的变量。可以使用所示的符号和下标来构造其他变体和演化适当的符号。前缀“working”和“design”也可以应用于定义的数量。

ISO 17769:2008 deals with 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. ISO 17769:2008 identifies the units in common usage but all other legal units can be used. ISO 17769:2008 deals solely with conditions described by positive values for the rate of flow and pump head. The definitions are set out showing, first, the most common form of a quantity followed by some frequently used variants. Other variants can be constructed and appropriate symbols evolved using the symbols and subscripts shown. Prefixes such as “working” and “design” can also be applied to the defined quantities.