ISO INTERNATIONAL STANDARD 9635-3 Secondedition 2014-11-15 Agricultural irrigation equipment - Irrigation valves - Part 3: Check valves Materiel agricole d'irrigation-Vannes d'irrigation Partie3:Clapetsantiretour Reference number IS09635-3:2014(E) @ ISO 2014 Copyright Interr rovided by IHS e with IS IS09635-3:2014(E) COPYRIGHTPROTECTEDDOCUMENT ISO2014 All rights reserved. Unless otherwise specified, no part of this publication maybe reproduced or utilized otherwise in any form written permission. Permission can be requested from eitherISO at the address below or ISO's member body in the country of therequester. ISO copyrightoffice Case postale 56.CH-1211 Geneva 20 Tel.+41227490111 Fax+41227490947 E-mail [email protected] Webwww.iso.org Published in Switzerland ational Organization for Standardization Is02014-Allrightsreserved Not for Resale, 07/09/2015 01:32:09 MD IS09635-3:2014(E) Contents Page Foreword .iv 1 Scope. ..1 2 Normativereferences ..1 3 Terms and definitions ..1 4 Design requirements. .1 5 Performancerequirements .2 5.1 Mechanical strength 2 5.2 Watertightnessandairtightness. 3 5.3 Hydrauliccharacteristics 4 5.4 Resistancetochemicalsandfertilizers . 5.5 Endurance. .4 6 Conformityassessment .4 6.1 General. 6.2 Type tests 4 6.3 Controlofproductionprocessandqualitysystem .4 7 Marking ..5 8 Packaging .5 AnnexA (normative)Testmethodforenduranceofcheckvalves .6 Bibliography 7 ili ProvidedbyIHSunderlicensewithISO Licensee i966844001,Uertrer, yyy