ISO 17769-2-2012 PDF

Full title and description

Liquid pumps and installation — General terms, definitions, quantities, letter symbols and units — Part 2: Pumping system. This part defines terms, literal symbols and units related to the flow of liquids through rotodynamic and positive-displacement pumps and associated pumping installations to ensure consistent communication among designers, manufacturers, operators and plant constructors.

Abstract

ISO 17769-2:2012 specifies standardized terminology, quantities, letter symbols and units that apply to pumping systems (including rotodynamic and positive-displacement pumps and their installations). It identifies commonly used units while allowing other legal units, and focuses on providing uniform definitions to support specification, testing, documentation and communication across the supply chain.

General information

• Status: Published (International Standard; confirmed in the ISO maintenance cycle).
• Publication date: 23 July 2012.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 23.080 — Pumps.
• Edition / version: Edition 1 (2012).
• Number of pages: 27.

Scope

ISO 17769-2:2012 deals mainly with pumping systems: it specifies the terms, letter symbols and units associated with the flow of liquids through rotodynamic (centrifugal and related) and positive-displacement pumps and the related installations. The purpose is to harmonize language and notation used in design documents, product literature, test reports and operational records so that designers, manufacturers, operators and constructors share a common understanding. The standard identifies commonly used units but does not prohibit the use of other legal units.

Key topics and requirements

• Definitions of general terms used for pumps and pumping systems (flows, heads, efficiencies, losses, system curves).
• Standard letter symbols (formula symbols) for principal quantities used in pump system calculations.
• Recommended units for quantities relevant to pumps and pumping installations; guidance on unit notation and conversion practices.
• Distinction and coverage for rotodynamic (centrifugal/mixed/axial) and positive-displacement pump types.
• Clarification of interfaces between pump performance (pump curve) and system characteristics (system curve, losses).
• Alignment of symbols and definitions with wider ISO conventions where practical to support consistency across standards.

Typical use and users

Used by pump designers and manufacturers, plant and systems engineers, HVAC and process engineers, installation contractors, test laboratories, standards writers and procurement/specification teams. Typical applications include preparing technical specifications, test reports, installation drawings, performance calculations, and contractual documents where precise, unambiguous definitions and symbols are required.

Related standards

Closely related to ISO 17769-1:2012 (Part 1: Liquid pumps) and the former consolidated ISO 17769 (2008, withdrawn). It is also used alongside pump test and performance standards (for example ISO test codes and performance-related standards developed by ISO/TC 115) and general quantities/units standards (ISO 80000 series).

Keywords

pumps; pumping system; pump terminology; letter symbols; units; rotodynamic pumps; positive-displacement pumps; pump performance; system curve; ISO 17769; ISO/TC 115.

FAQ

Q: What is this standard?

A: ISO 17769-2:2012 is the ISO international standard that defines terms, letter symbols and units specifically for pumping systems (rotodynamic and positive-displacement pumps and associated installations).

Q: What does it cover?

A: It covers standardized definitions, the recommended formula (literal) symbols and the units used when describing flow, head, power, efficiency, losses and other quantities relevant to pumps and pumping systems, with the aim of harmonizing technical communication.

Q: Who typically uses it?

A: Pump manufacturers, system designers, plant operators, test laboratories, procurement and specification authors, and anyone preparing technical documentation or performing calculations involving pumps and pumping systems.

Q: Is it current or superseded?

A: ISO 17769-2:2012 is a published International Standard (Edition 1, 2012) and remains current under ISO’s review/confirmation process (the standard was confirmed within the ISO maintenance cycle). Users should check the ISO catalogue for any future revisions or confirmation details.

Q: Is it part of a series?

A: Yes — it is Part 2 of the ISO 17769 series (Part 1 covers liquid pumps). The 2008 edition of ISO 17769 was subsequently replaced by the two-part arrangement (Parts 1 and 2) published in 2012.

Q: What are the key keywords?

A: Pumps, pumping system, terminology, letter symbols, units, rotodynamic, positive-displacement, pump performance, system curve, ISO 17769.