BS ISO 4397:2011 BSl Standards Publication Fluid power connectors and associated components - Nominal outside diameters of tubes and nominal hose sizes bsi. ..making excellence a habit. BS ISO 4397:2011 BRITISH STANDARD National foreword This British Standard is the UK implementation of IS 4397:2011. The UK participation in its preparation was entrusted to Technical Committee MCE/18/-/4, Connectors andassociated components. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @BSI 2011 ISBN 9780580668463 ICS 23.100.40 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31October 2011. Amendments issued since publication Date Text affected BS ISO 4397:2011 INTERNATIONAL ISO 4397 STANDARD Third edition 2011-10-15 Fluid power connectors and associated components Nominal outside diameters of tubes and nominal hose sizes Raccords et élements associés danslestransmissionshydrauliques et pneumatiques-Diametres exterieurs nominaux des tubes ettailles nominalesdestuyauxflexibles Reference number ISO 4397:2011(E) ISO @ISO 2011 BS ISO 4397:2011 ISO 4397:2011(E) COPYRIGHTPROTECTEDDOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Casepostale 56 : CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ ISO 2011 -All rights reserved BS ISO 4397:2011 ISO 4397:2011(E) Foreword technical committees.Each member body interested in a subject for which a technical committee has been non-governmental, in liaison with isO, also take part in the work. isO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO4397waspreparedbyTechnicalCommitteeISO/TC131,Fluidpowersystems,SubcommitteeSC4, Connectorsandsimilarproductsand components This third edition cancels and replaces the second edition (IsO 4397:1993), which has been technically revised. ISO 2011 All rights reserved ili BS ISO 4397:2011 ISO 4397:2011(E) Introduction In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under pressure within an enclosed circuit. Components are interconnected through their ports and associated fluid conductor connector ends. Tubes are rigid or semi-rigid conductors; hoses are flexible conductors iv @ ISO 2011-All rights reserved BS ISO 4397:2011 INTERNATIONALSTANDARD ISO4397:2011(E) Fluid power connectors and associated components Nominal outside diametersoftubesand nominalhosesizes 1 Scope This International Standard specifies information on the nominal outside diameters of rigid or semi-rigid tubing and nominal hose sizes to be used with hydraulic and pneumatic fluid power connectors and associated components: nominal outside diameters for rigid or semi-ri