BS ISO 9635-5-2014 Agricultural irrigation equipment Irrigation valves Control valves《农业灌溉设备 灌溉阀 控制阀》.pdf

1、BSI Standards Publication BS ISO 9635-5:2014 Agricultural irrigation equipment Irrigation valves Part 5: Control valvesBS ISO 9635-5:2014 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 9635-5:2014. It supersedes BS ISO 9635-5:2006 which is withdrawn. The UK

2、participation in its preparation was entrusted to Technical Committee AGE/30, Irrigation and drainage equipment. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract.

3、 Users are responsible for its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014 ISBN 978 0 580 80894 4 ICS 65.060.35 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the aut

4、hority of the Standards Policy and Strategy Committee on 31 December 2014. Amendments issued since publication Date Text affectedBS ISO 9635-5:2014 ISO 2014 Agricultural irrigation equipment Irrigation valves Part 5: Control valves Matriel agricole dirrigation Vannes dirrigation Partie 5: Vannes de

5、contrle INTERNATIONAL STANDARD ISO 9635-5 Second edition 2014-12-01 Reference number ISO 9635-5:2014(E)BS ISO 9635-5:2014ISO 9635-5:2014(E)ii ISO 2014 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reprodu

6、ced 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 ISOs member body in the country of the requester.

7、ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in SwitzerlandBS ISO 9635-5:2014ISO 9635-5:2014(E)Contents Page Foreword iv 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Design

8、 requirements 2 5 Performance requirements . 2 5.1 Mechanical strength . 2 5.2 Watertightness 4 5.3 Hydraulic characteristics . 5 5.4 Resistance to chemicals and fertilizers 5 5.5 Endurance . 5 6 Conformity assessment . 5 6.1 General . 5 6.2 Type tests . 6 6.3 Control of production process and quali

9、ty system 6 7 Marking 7 8 Packaging . 7 Annex A (normative) Test method for hydraulic characteristics of control valves providing flo w r egulation function . 8 Annex B (normative) Test method for hydraulic characteristics of control valves providing pressure regulation function . 9 Annex C (normati

10、ve) Test method for hydraulic characteristics of control valves providing level regulation .11 Annex D (normative) Test method for endurance of control valves .12 Bibliography .13 ISO 2014 All rights reserved iiiBS ISO 9635-5:2014ISO 9635-5:2014(E) Foreword ISO (the International Organization for St

11、andardization) 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 in a subject for which a technical committee has been established has the rig

12、ht 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 (IEC) on all matters of electrotechnical standardization. The procedure

13、s used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial ru

14、les of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights iden

15、tified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanatio

16、n on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document

17、is Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 18, Irrigation and drainage equipment and systems. This second edition cancels and replaces the first edition (ISO 9635-5:2006), which has been technically revised. ISO 9635 consists of the followi

18、ng parts, under the general title Agricultural irrigation equipment Irrigation valves: Part 1: General requirements Part 2: Isolating valves Part 3: Check valves Part 4: Air valves Part 5: Control valvesiv ISO 2014 All rights reservedBS ISO 9635-5:2014Agricultural irrigation equipment Irrigation val

19、ves Part 5: Control valves 1 Scope This part of ISO 9635 specifies construction and performance requirements and test methods for control valves, intended for operation in irrigation systems with water at temperatures not exceeding 60 C, which can contain fertilizers and other chemicals of the types

20、 and concentrations used in agriculture. It is applicable to hydraulically-operated control irrigation valves of DN 15 (1/2 inch) diameter or greater, designed to operate in any position, from fully open to fully closed. The valves can either be directly operated (i.e. the force applied via a spring

21、 or diaphragm to the obturator), or pilot-operated (i.e. the force is applied through an adjustable pilot valve via a diaphragm). These valves can also function as check valves. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are i

22、ndispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 9635-1:2014, Agricultural irrigation equipment Irrigation valves Part 1: General requirements ISO 9635

23、2:2014, Agricultural irrigation equipment Irrigation valves Part 2: Isolating valves ISO 9644, Agricultural irrigation equipment Pressure losses in irrigation valves Test method 3 T erms a nd definiti ons For the purposes of this document, the terms and definitions given in ISO 9635-1 and the follo

24、wing apply. 3.1 control valve device intended to regulate, within specified limits, one or more functions Note 1 to entry: The functions are flow rate, water level, and pressure control (upstream or downstream). The valves are also used to start or terminate irrigation system operation. 3.1.1 autono

25、mous control valve control valve (3.1) that uses the energy from the conveyed water to adjust the position of the obturator for the regulation of a specific function 3.1.2 non-autonomous control valve control valve (3.1) that requires external power to adjust the position of the obturator for the re

26、gulation of a specific function 3.1.3 pressure-reducing valve control valve (3.1) that reduces a higher inlet pressure to a constant lower outlet pressure regardless of variations in the flow rate or variations of the inlet pressure INTERNATIONAL ST ANDARD ISO 9635-5:2014(E) ISO 2014 All rights rese

27、rved 1BS ISO 9635-5:2014ISO 9635-5:2014(E) 3.1.4 pressure-sustaining valve control valve (3.1) that maintains a constant pressure at the inlet regardless of variations in the flow rate or variations in the outlet pressure 3.2 f lo w c o e f f ic ie nt K v number equal to the flow rate of water, in c

28、ubic metres per hour, that will flow through a fully open valve with a 100 kPa pressure loss across the valve Note 1 to entry: v , where Q is the flow rate in cubic metres per hour (m 3 /h), and p is the pressure in bar. Note 2 to entry: 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm 2 . Note 3 to entry:

29、Adapted from EN 7363. 3.3 maximum differential pressure highest differential pressure of the control valve in operation Note 1 to entry: It is a value given by the manufacturer. 4 Design requirements Control valves shall be designed in accordance with ISO 9635-1:2014, Clause 4. Control valves design

30、ed to control pressure or water level shall be tightly seated when closed (see ISO 9635-1:2014, Table G.2, Rate A). The manufacturer shall indicate in the relevant technical documentation the working limits of the valve and any special conditions for installation and commissioning. 5 Performance req

31、uirements Perform all tests on the valve as delivered to the test facility. 5.1 Mechanical strength 5.1.1 Resistance of shell and all pressure-containing components to internal pressure Carry out testing in accordance with ISO 9635-1:2014, 5.1.1. If the manufacturer indicates that any feature of the

32、 control valve is not designed to withstand a high pressure, the technical documentation shall indicate the appropriate means to be used (for example, isolating valves of the control system), in order to protect that feature during the test. Test the features protected by these means to the pressure

33、 given in ISO 9635-1:2014, 5.1.2. Test results shall comply with the requirements of ISO 9635-1:2014, 5.1.1. 5.1.2 Resistance of obturator to differential pressure The valve shall comply with the requirement and test in ISO 9635-1, 5.1.2. If a control valve is designed not to seat tightly, the requi

34、rement and test for the obturator shall be modified as follows: the differential pressure which the obturator shall withstand shall be the lower of (1,5 PM) bar and (PM + 5) bar where PM is the maximum differential pressure of the control valve in 2 ISO 2014 All rights reservedBS ISO 9635-5:2014ISO

35、9635-5:2014(E) operation (value to be given by the manufacturer). After the test, the valve shall comply with the control performances of this part of ISO 9635 (see 5.2). After the test, the valve shall meet the performance requirements of 5.3. 5.1.3 Resistance of valves to bending Carry out testing

36、 in accordance with ISO 9635-1:2014, 5.1.3. The bending moment, M, to be applied during the test shall be as set out for the appropriate value of DN as set out in Table 1. Test results shall comply with the requirements of ISO 9635-1:2014, 5.1.3. Table 1 Bending moments DN Bending moment M N m 8 610

37、 10 615 20 640 25 670 32 730 40 825 50 525 65 700 80 750 100 1 100 125 1 600 150 2 400 200 3 600 250 5 500 300 7 500 350 9 500 400 12 000 450 14 000 500 16 500 5.1.4 Resistance of valves to operating loads Carry out testing in accordance with ISO 9635-1:2014, 5.1.4 or in accordance with the manufact

38、urers instructions. Test results shall comply with the requirements of ISO 9635-1:2014, 5.1.4. ISO 2014 All rights reserved 3BS ISO 9635-5:2014ISO 9635-5:2014(E) 5.2 Watertightness 5.2.1 Watertightness of shell and all pressure-containing components 5.2.1.1 Internal pressure Carry out testing in acc

39、ordance with ISO 9635-1:2014, 5.2.1.1. Test results shall comply with the requirements of ISO 9635-1:2014 5.2.1.2 External pressure Carry out testing in accordance with ISO 9635-1:2014, 5.2.1.2. Test results shall comply with the requirements of ISO 9635-1:2014, 5.2.1.2. 5.2.2 Seat tightness This te

40、st is applicable only to control valves where seat tightness is a requirement or is claimed by the manufacturer (see Clause 4). For level control and pressure control valves, select rate A for the leakage rate not to be exceeded (see ISO 9635-1:2014, Table G.2), for the conditions defined in the man

41、ufacturers documentation. For other valves, select a leakage rate as specified in the manufacturers documentation. Check the seat tightness at the highest and lowest values of the differential pressure, as follows: a) 1,1 allowable operating pressure; b) the lowest differential pressure allowed as s

42、pecified in manufacturers documentation. For both cases, carry out the testing in accordance with ISO 9635-1:2014, 5.2.2.1, with the values of the differential pressure as defined in a) and b), above. Test results shall comply with the requirements of ISO 9635-1:2014, 5.2.2.1. 5.2.3 Maximum operatin

43、g torque for operation and watertightness This test is applicable only to control valves whose main obturator can be operated manually to override or limit the control function. Carry out tests in accordance with ISO 9635-2:2014, 5.2.3. Test results shall comply with the requirements of ISO 9635-2:2

44、014, 5.2.3. If the required maximum operating torque exceeds the limits according to this part of ISO 9635, this should be specified in the manufacturers product literature. 5.2.4 Watertightness and air-tightness of gearboxes to external pressure Carry out testing in accordance with ISO 9635-1:2014,

45、 5.2.1.2. Test results shall comply with the requirements of ISO 9635-1:2014, 5.2.1.2.4 ISO 2014 All rights reservedBS ISO 9635-5:2014ISO 9635-5:2014(E) 5.3 Hydraulic characteristics 5.3.1 Flo w c oefficient , K v The manufacturer shall give the flow coefficient, K v , obtained from the head loss cu

46、rve performed in accordance with ISO 9644. For both autonomous and non-autonomous control valves, K vshall be given as a function of the fully open position. When measured in accordance with ISO 9644, the flow coefficient shall be within a range of 5 % of the value given by the manufacturer. 5.3.2 R

47、egulation hydraulic characteristics This test is applicable to both autonomous control valves and to non-autonomous control valves where the manufacturer claims specific hydraulic characteristics linked to a designated control system. 5.3.2.1 C ontr ol v al v es pr o viding flo w r egulation fu ncti

48、on Test the control valve as set out in Annex A. The values obtained shall be within the tolerances given in the manufacturers documentation or if not indicated, within 10 % of the values given in the manufacturers documentation. 5.3.2.2 Control valves providing pressure regulation function Test the

49、 control valve as set out in Annex B. The values obtained shall be within the tolerances given in the manufacturers documentation or if not indicated, within 10 % of the values given in the manufacturers documentation. 5.3.2.3 Control valves providing level regulation function Test the control valve as set out in Annex C. The values obtained shall be within the tolerances given in the manufacturers documentation or if not indicated, within 10 % of the values given in the manufact