ISO INTERNATIONAL STANDARD 9635-4 Secondedition 2014-11-15 Agricultural irrigation equipment - Irrigation valves - Part 4: Air valves Materiel agricole d'irrigation -Vannes d'irrigation - Partie 4: Vannes de purge d'air Reference number ISO 9635-4:2014(E) ISO Intemational Organization for Standardization @IS02014 idardization5956617 ted without license from IHS IS09635-4:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2014 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 Case postale 56.CH-1211 Geneva 20 Tel. +4122 749 0111 Fax +41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland PrganizationforStandardization networking permited without license from IHS NotforResale, 2015/5/1308:52:54 IS0 9635-4:2014(E) Contents Page Foreword ..iv 1 Scope ..1 2 Normative references 3 Terms and definitions 4 Design requirements. .2 5 Performancerequirements .2 5.1 General .2 5.2 Mechanical strength .2 5.3 Watertightness. .2 5.4 Airflowcharacteristics .3 5.5 Resistance to chemicals and fertilizers 4 5.6 Endurance 4 6 Conformityassessment .5 6.1 General. 5 6.2 Type tests. .5 6.3 Control of production process and quality system .5 7 Marking .6 8 Packaging .6 AnnexA (normative)Test method forairflow characteristics of valves with air release function...7 Annex B (normative)Test method for airflow characteristics of valveswith air intakefunction.... 9 AnnexC (normative)Testmethodforenduranceofvalveswithairintakeand/orair releasefunctions .12 Bibliography ..14 iii putlicense from IHS