ISO INTERNATIONAL 23632 STANDARD First edition 2021-05 Industrial valves Design validation testing of valves Robinetterie industrielle-Essais de validation de la conception des appareils de robinetterie Reference number ISO23632:2021(E) ISO @ISO2021 IS0 23632:2021(E) COPYRIGHTPROTECTEDDOCUMENT IS02021 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 below or Iso's member body in the country of the requester. ISO copyright office CP 40i: Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: copyright@iso.org Website: www.iso.org Published in Switzerland i IS0 2021-All rights reserved IS023632:2021(E) Contents Page Foreword ..iv Introduction 1 Scope. ..1 2 Normativereferences ..1 3 Terms and definitions ..1 4 Type test. .3 4.1 Test condition. .3 4.1.1 General. 3 4.1.2 Closure test. .3 4.1.3 Torque measurement. 4 4.1.4 ..4 Temperature measurement 4.1.5 Test facility and safety rules .6 4.1.6 Mechanical-cycle classes .6 4.2 Test description 7 4.2.1 General .7 4.2.2 Test temperatures. .7 4.2.3 Closuretest .8 4.2.4 Unseating torque .8 4.2.5 Maximum allowable stemtorque (MAST) .8 4.2.6 Post-testexamination. .8 4.2.7 Qualification. .8 4.3 Test report. ..9 5 Extensions of qualification to the product range. .9 AnnexA(informative)Reporttemplate. ..12 Bibliography .14 @ IS0 2021 -All rights reserved iii