ISO INTERNATIONAL STANDARD 11177 Secondedition 2019-03 Vitreous and porcelain enamels 一 Inside and outside enamelled valves and pressure pipe fittings for untreated and potable water supply - Quality requirements and testing Emauxvitrifies-Robinetterieet raccordsdetuyauteriepour conduites forcées émaillés a I'interieuret a I'exterieur destines a I'alimentation en eaunontraiteeeten eaupotable-Exigencesde qualitéetessais Referencenumber ISO11177:2019(E) ISO IS02019 IS011177:2019(E) COPYRIGHTPROTECTEDDOCUMENT @I IS02019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 orIso'smemberbody in the country of the requester. ISO copyright office CP 401: Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+41227490111 Fax: +41 22749 09 47 Email:[email protected] Website: www.iso.org Published in Switzerland ii @IS02019-All rights reserved IS0 11177:2019(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope.. .1 2 Normativereferences ..1 3 Terms and definitions .1 4 Sampling. .2 5 Qualityrequirementsandtestingprocedures .2 5.1 Enamelling surface quality .2 5.2 Coat thickness. 2 5.3 Hardness. .2 5.4 Resistance to thermal shock. 2 5.5 Corrosionresistancetowaterand steam 3 5.6 Corrosionresistancetocitricacid 3 5.7 Corrosionandchemicalresistancetoacidsoil 3 5.8 Corrosionandchemicalresistancetosub-surfacemigrationofenamelafterimpacttest...3 5.9 Corrosion resistance after scratchdamage 4 5.10 Corrosionresistanceafterabrasiondamage 4 5.11 Resistance to climatic exposure and ultraviolet radiation 4 5.12 Physiological harmlessness 4 6 Testreport. 5 IS0 2019-All rights reserved ili