ISO INTERNATIONAL STANDARD 15873 First edition 2002-09-15 Irrigation equipment - Differential pressure Venturi-type liquid additive injectors Materiel d'irrigation - Injecteurs d'engrais liquides de type venturi a pression differentielle Reference number ISO 15873:2002(E) ISO @ ISO 2002 by IHS under lic Not for Resale ISO 15873:2002(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The IsO Central Secretariat accepts no liability in this area Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by isO member bodies. In the unlikely event @ISO2002 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic 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 [email protected] Web www.iso.ch Printed in Switzerland @Iso2002-All rights reserved py IHS unde ermittedwithout license from IHS Not for Resale ISO15873:2002(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission(lEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 3. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. Subcommittee Sc 18, Irrigation and drainage equipment and systems. ii aadizao No reproductic neworkingmitedwithout licenefrmH Not for Resale INTERNATIONAL STANDARD ISO 15873:2002(E) Irrigation equipment Differential pressure Venturi-type liquid additive injectors 1 Scope This International Standard specifies the construction of, and operational requirements and test methods for, differential pressure Venturi-type liquid additive injectors - a component of systems used to inject chemicals. including liquid fertilizers, liquid solutions of water-soluble fertilizers, acids, caustics, pesticides, herbicides and other liquid additives, into irrigation systems. This International Standard does not specify means of preventing backflow of liquid additives to potable water supply systems, the assembly of such means near to the Venturi injector being covered by water protection regulations. 2Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to undated references, the latest edition of the normative document referred to applies. Members of IsO and IEC maintain registe