ICS 23.100.40                         PGD 36

Revised Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 1) (First Revision) which is identical with ISO 7241 : 2014 ‘Hydraulic fluid power - Dimensions and requirements of quick-action couplings’ 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 hydraulic fluid power systems, power is transmitted and controlled through a liquid under pressure within an enclosed circuit. Quick-action couplings are used to join or separate fluid conductors quickly and without the use of tools or special devices.

When hydraulic quick-action couplings are used on agricultural machinery, the female coupling half is normally assembled on the tractor and the male coupling half is normally assembled on the tractor attachment.

This standard was first published in 1995 which was based on ISO 7241-1 : 1987 ‘Hydraulic fluid power - Quick action couplings - Part 1: Dimensions and requirements’. This revision is taken up to align with the latest version of ISO 7241 published in 2014. In this revision as ISO has removed the two parts, the test methods and the dimensions and requirements and published as two separate standards. But in order to easy access to the industry, Indian standards are still put in two parts of the same standard.

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

Part 2 Test methods

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, the current practice is to use a point (.) as the decimal marker.