ISO INTERNATIONAL 6553 STANDARD Second edition 2016-12-15 Automatic steam traps - Marking Purgeurs automatiques de vapeurs d'eau-Marquage Referencenumber ISO 6553:2016(E) ISO @ ISO 2016 Intermational Organization for Standardization Provided by IHS under lic se with ISO IS06553:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,or posting on the internet or an intranet,without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8. CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Provided by IHS under networking permited without licanse from IHS IS06553:2016(E) Contents Page Foreword ..iv Introduction. .. 1 Scope. 2 Normative references 3 Terms and definitions 4 General requirements ..1. 5 Mandatory marking. ..1 6 Optional markings ..2 7 Additional markings. .2 Bibliography .3 ili ed without license from IHS