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1、 Reference number ISO 9635-1:2006(E) ISO 2006 INTERNATIONAL STANDARD ISO 9635-1 First edition 2006-11-15 Agricultural irrigation equipment Irrigation valves Part 1: General requirements Matriel agricole dirrigation Vannes dirrigation Partie 1: Exigences gnrales Copyright International Organization f
2、or Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 09:11:45 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9635-1:2006(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Ado
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5、e has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2006 All rights reserved. Unless otherwise specified, no part of this publication may
6、 be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel.
7、+ 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2006 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 09:11:45 M
8、DTNo reproduction or networking permitted without license from IHS -,-,- ISO 9635-1:2006(E) ISO 2006 All rights reserved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 2 4 Design requirements 4 4.1 Materials 4 4.2 DN. 4 4.3 Pressures. 4 4.4 Temperatures
9、4 4.5 Design of shell and obturator 5 4.6 End types and interchangeability . 5 4.7 Operating direction. 5 4.8 Maximum water velocity 5 4.9 Valve parts. 5 4.10 Internal corrosion and ageing resistance 6 4.11 External corrosion and ageing resistance. 6 4.12 Repairs and maintenance 6 5 Performance requ
10、irements 6 5.1 Mechanical strength. 6 5.2 Watertightness 7 5.3 Hydraulic characteristics. 8 5.4 Resistance to chemicals and fertilizers 8 5.5 Endurance test 8 6 Conformity assessment. 8 6.1 General. 8 6.2 Type tests 8 6.3 Control of production process and quality system 9 7 Marking 9 8 Packaging 9 A
11、nnex A (normative) Test method for resistance to internal pressure of shell and all pressure-containing components. 10 Annex B (normative) Test method for resistance of obturator to differential pressure. 11 Annex C (normative) Test method for resistance of valves to bending. 13 Annex D (normative)
12、Minimal test method for watertightness to external pressure of shell and all pressure-containing components. 15 Annex E (normative) Test method for resistance to chemicals and fertilizers 16 Annex F (normative) Test method for water or air tightness of valve body 17 Annex G (normative) Test method f
13、or seat tightness 19 Bibliography. 24 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 09:11:45 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9635-1:2006(E) iv ISO
14、2006 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested i
15、n a subject for which a technical committee has been established has 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 Commis
16、sion (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical
17、 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 document may be the subject of patent rights. ISO shall
18、 not be held responsible for identifying any or all such patent rights. ISO 9635-1 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 18, Irrigation and drainage equipment and systems. This first edition of ISO 9635-1, together with IS
19、O 9635-2, ISO 9635-3, ISO 9635-4 and ISO 9635-5, cancels and replaces ISO 9635:1990, of which it constitutes a technical revision. ISO 9635 consists of the following parts, under the general title Agricultural irrigation equipment Irrigation valves: Part 1: General requirements Part 2: Isolating val
20、ves Part 3: Check valves Part 4: Air valves Part 5: Control valves Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 09:11:45 MDTNo reproduction or networking permitted without license from IHS -,-
21、,- INTERNATIONAL STANDARD ISO 9635-1:2006(E) ISO 2006 All rights reserved 1 Agricultural irrigation equipment Irrigation valves Part 1: General requirements 1 Scope This part of ISO 9635 specifies construction and performance requirements and test methods for valves, intended for operation in irriga
22、tion systems with water at temperatures not exceeding 60 C, which can contain fertilizers and other chemicals of the types and concentrations used in agriculture. It is applicable to irrigation valves of 15 mm diameter or greater, designed to operate in the fully open and fully closed positions, but
23、 which can also operate for extended time periods in any intermediate position. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the re
24、ferenced document (including any amendments) applies. ISO 4633, Rubber seals Joint rings for water supply, drainage and sewerage pipelines Specification for materials ISO 5209, General purpose industrial valves Marking ISO 5752, Metal valves for use in flanged pipe systems Face-to-face and centre-to
25、-face dimensions ISO 6708:1995, Pipework components Definition and selection of DN (nominal size) ISO 7005-1, Metallic flanges Part 1: Steel flanges ISO 7005-2, Metallic flanges Part 2: Cast iron flanges ISO 7005-3, Metallic flanges Part 3: Copper alloy and composite flanges ISO 9227, Corrosion test
26、s in artificial atmospheres Salt spray tests ISO 9635-2:2006, Agricultural irrigation equipment Irrigation valves Part 2: Isolating valves ISO 9635-3:2006, Agricultural irrigation equipment Irrigation valves Part 3: Check valves ISO 9635-4:2006, Agricultural irrigation equipment Irrigation valves Pa
27、rt 4: Air valves ISO 9635-5:2006, Agricultural irrigation equipment Irrigation valves Part 5: Control valves ISO 9644, Agricultural irrigation equipment Pressure losses in irrigation valves Test method Copyright International Organization for Standardization Provided by IHS under license with ISO Li
28、censee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 09:11:45 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9635-1:2006(E) 2 ISO 2006 All rights reserved ISO 9911:1), Agricultural irrigation equipment Manually operated small plastics valves ISO 9080, Plastics piping
29、 and ducting systems Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation EN 681-1, Elastomeric seals Materials requirements for pipe joint seals used in water and drainage applications Part 1: Vulcanized rubber EN 12627, Industrial valves But
30、t welding ends for steel valves EN 12982, Industrial valves End-to-end and centre-to-end dimensions for butt welding end valves 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 maximum operating torque maximum limit of torque which, when appli
31、ed at the shaft, operates the valve and ensures compliance with the required leakage rate 3.2 minimum strength torque minimum limit of torque which, when applied at the shaft with the obturator either totally open or totally closed, causes no alteration to the functional capability of the valve 3.3
32、shaft point where the load (torque) is applied in order to change the position of the valve obturator, which may be the end of the stem, or the input shaft of the reducer when the reducer is an integral part of the valve 3.4 type test test made to prove that the design meets the corresponding perfor
33、mance requirements in this part of ISO 9635 and the part of ISO 9635 related to the specific valve being tested 3.5 operating mechanism mechanism which translates the motion of the operating device to the motion of the obturator EN 736-2 3.6 operating device manual or power operated device used to o
34、perate the bare valve EN 736-2 3.7 operating element component of the operating device by which the mechanical power is introduced EN 736-2 1) To be published. (Revision of ISO 9911:1993) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco
35、HQ/9980755100 Not for Resale, 04/16/2007 09:11:45 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9635-1:2006(E) ISO 2006 All rights reserved 3 3.8 DN alphanumeric designation of the size of pipe work components, used for reference purposes, comprising the letters DN fo
36、llowed by a dimensionless round number which is loosely related to the effective dimensions, in millimetres, of the bore or external diameter of the end connections NOTE Adapted from ISO 6708:1995, definition 2.1. 3.9 nominal pressure PN numerical designation which is a convenient rounded number for
37、 reference purposes, designated by the letters PN followed by a dimensionless round number which is loosely related to the pressure, expressed in bars NOTE 1 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2. NOTE 2 Adapted from ISO 7268:1983/Amd 1:1984. 3.10 allowable operating pressure PFA maximum hydrost
38、atic pressure that a component is capable of withstanding continuously in service 3.11 maximum allowable pressure PMA maximum pressure occurring from time to time, including surge, that a component is capable of withstanding in service 3.12 allowable site test pressure PEA maximum hydrostatic pressu
39、re that a newly installed component is capable of withstanding for a relatively short duration, in order to ensure integrity and tightness of the pipeline 3.13 obturator movable component of the valve whose position in the fluid flow path restricts or obstructs the fluid flow Copyright International
40、 Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 09:11:45 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9635-1:2006(E) 4 ISO 2006 All rights reserved 4 Design requirements 4.1 Materials 4
41、.1.1 Components and coating materials Components and coating materials shall be selected from those conforming to the relevant standards, where existent. They shall also be in accordance with 4.9, 4.10 and 4.11, either alone or in combination with coating materials. 4.1.2 Elastomers Elastomers shall
42、 be in accordance with ISO 4633 or EN 681-1 and 4.10 of this part of ISO 9635. 4.2 DN The DN values shall be selected from the preferred values given in ISO 6708, with an upper limit of DN 2 000. The manufacturer shall indicate whether a DN value is from the DN/ID series or from the DN/OD series. 4.
43、3 Pressures Valves intended for irrigation systems come under the nominal pressure (PN) designation and shall be designed in such a way that their characteristic pressures, allowable operating pressure (PFA), maximum allowable pressure (PMA) and allowable site test pressure (PEA) are in accordance w
44、ith Table 1 for the corresponding PN (see also 4.4). Table 1 Valve pressures Pressure bar PN PFAa PMAa PEAb 6 6 8 12 10 10 12 17 16 16 20 25 25 25 30 35 a Applicable to valves in all positions, from fully closed to fully open. b Applicable only to valves not in the closed position. Table 1 gives min
45、imum values of PMA and PEA. The manufacturers catalogue can indicate higher values on the condition that the requirements of this part of ISO 9635 have been verified with these higher values. In this case, PEA shall not be less than the lesser of 1,5 PMA or (PMA + 5) bar. 4.4 Temperatures Valves sha
46、ll be designed for service temperatures from 1 C to 60 C and for storage temperatures between 40 C and 70 C. For valves made from materials with temperature-dependent mechanical behaviour, the PFA, PMA and PEA shall be established at (23 3) C and, if applicable, a factor (temperature/pressure table)
47、 for higher temperatures shall be given by the product standards and/or the manufacturer. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 09:11:45 MDTNo reproduction or networking permitted witho
48、ut license from IHS -,-,- ISO 9635-1:2006(E) ISO 2006 All rights reserved 5 4.5 Design of shell and obturator Valves shall be designed to ensure a safety factor against short-term and long-term shell and obturator rupture, taking account of PFA, PMA and PEA according to 4.3. This requirement shall not preclude any of the performance requirements given in Clause 5. The design shall be carried out using ei