ISO INTERNATIONAL STANDARD 9912-3 Second edition 2013-10-01 Agricultural irrigation equipment - Filters for microirrigation - Part 3: Automatic flushing strainer-type filters and disc filters Materiel agricole d'irrigation Filtres pour micro-irrigation Partie 3: Filtres a tamis et filtres a disque auto-nettoyants Reference number ISO 9912-3:2013(E) @ IS0 2013 IS0 9912-3:2013(E) COPYRIGHTPROTECTEDDOCUMENT @JS02013 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+41227490947 E-mail [email protected] Web www.iso.org Published in Switzerland .ii IS02013-Allrightsreserved IS0 9912-3:2013(E) Contents Page Foreword .iv 1 Scope. .1 2 Normative references ..1 3 Terms and definitions ..1 4 Marking .2 5 General requirements T 6 Design and construction requirements 2 6.1 Mandatory requirements .2 6.2 Optional features.. .4 7 Performance tests ..4 7.1 General 4 7.2 Volume of flushing water and duration of flushing 7.3 Operation of the flushing control mechanism 5 7.4 Operationoftheprotectivemechanism .6 8 Performance tests after long term simulated use. 8.1 Multiple flushing cycles procedurel 7 8.2 Tests following the multiple flushing cycles 7 9 Information to be supplied by the filter manufacturer 8 ..sn.2013-.l rightsreserved iii