ICS 01.080.30; 23.100.01                         PGD 36

New Standard from Last Update.

1 SCOPE

This Indian Standard (Part 3) which is identical with ISO 1219-3 : 2016 ‘Fluid power systems and components - Graphical symbols and circuit diagrams: Part 3 Symbol modules and connected symbols in circuit diagrams’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Fluid Power Systems Sectional Committee and approval of the Production and General Engineering Division Council.

In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under pressure within a circuit. Circuit diagrams are an aid to facilitate the understanding of the design and description of installations so that, by unified representations of them, confusion and error can be avoided during planning, manufacturing, installation and maintenance.

The rules of IS 7513 (Part 1) apply, unless other rules are defined in this part of IS 7513. In daily routine, the application of IS 7513 (Part 2) is slightly modified regarding symbols of connectable components and their arrangement. This is reflected in this part of IS 7513.

The Indian Standard IS 7513 was first published in 1974 taking the assistance from ISO 1219. After ISO parted the ISO 1219 in three parts, the concerned technical committee decided to make the Indian Standards in line with ISO.

This Indian Standard is published in three parts. The other parts in this series are:

Part 1 Graphical symbols for conventional use and data-processing applications

Part 2 Circuit diagrams

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviation. Certain terminologies and conventions are, however, not identical to those used in the Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as decimal marker, while in Indian Standards, it is current practice to use a full point (.) as the decimal marker.