ISO INTERNATIONAL STANDARD 9635-2 Second edition 2014-11-15 Agricultural irrigation equipment - Irrigation valves - Part 2: Isolating valves Matériel agricole d'irrigation - Vannes d'irrigation Partie 2: Vannes d'isolation Reference number ISO 9635-2:2014(E) ISO International Organization for Standardization ee=Zhejang Institute of Standardization 5956617 @IS02014 mitted without license from IHS IS0 9635-2:2014(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. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland DrganizationforStandardization Not for Resale, 2015/5/13 08:52:21 No reproduction or networking permited without license from IHS IS0 9635-2:2014(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references ..1 3 Terms and definitions 4 Design requirements. .2 5 Performance requirements .2 5.1 General .2 5.2 Mechanical strength .2 5.3 Watertightness and airtightness .3 5.4 Hydraulic characteristics 5 5.5 Resistance to chemicals and fertilizers 5 5.6 Endurance 5 6 Conformity assessment .6 6.1 General. 6 6.2 Type tests. ..6 6.3 Control of production process and quality system .. 6 7 Marking. ..6 8 Packaging ..6 Annex A (normative) Test method for resistance of valves to operating loads .8 Annex B (normative) Torque requirements for gate valves to be operated by ring key and bar .... Annex C (normative) Test method for operation of valves .10 Annex D (normative) Test method for endurance of valves ..11 Annex E (normative) Method for sizing operating element ..12 Bibliography. ..15 ii icensee=Zhejiang Institute of Standardization 5956617 thout license from IHS