1、BRITISH STANDARD BS EN 1074-5:2001 Valves for water supply Fitness for purpose requirements and appropriate verification tests Part 5: Control valves The European Standard EN 1074-5:2001 has the status of a British Standard ICS 23.060.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYR
2、IGHT LAWBS EN 1074-5:2001 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 March 2001 BSI 03-2001 ISBN 0 580 37040 2 National foreword This British Standard is
3、 the official English language version of EN 1074-5:2001. The UK participation in its preparation was entrusted by Technical Committee PSE/7, Valves, to Subcommittee PSE/7/7, Valves for the water industry, which has the responsibility to: A list of organizations represented on this subcommittee can
4、be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “
5、Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from le
6、gal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pag
7、es This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 14, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN
8、STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1074-5 January 2001 ICS 23.060.40 English version Valves for water supply Fitness for purpose requirements and appropriate verification tests Part 5: Control valves Robinetterie pour lalimentation en eau Prescriptions daptitude lemploi et vrifications sy r
9、apportant Partie 5: Robinets de rgulation Armaturen fr die Wasserversorgung Anforderungen an die Gebrauchstauglichkeit und deren Prfung Teil 5: Regelarmaturen This European Standard was approved by CEN on 28 December 2000. CEN members are bound to comply with the CEN/CENELEC Internal Regulations whi
10、ch stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Stand
11、ard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standar
12、ds bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NO
13、RMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1074-5:2001 EPage 2 EN 1074-5:2000 BSI 03-2001 Contents Page Foreword. 3 Introduction 4 1 Scope . 5 2 Normative refer
14、ences . 5 3 Terms and definitions. 5 4 Design requirements 6 5 Performance requirements 6 5.1 Mechanical strength 6 5.2 Leak-tightness. 7 5.3 Hydraulic characteristics . 8 5.4 Resistance to disinfection products 8 5.5 Endurance. 9 6 Conformity assessment . 9 6.1 General . 9 6.2 Type tests 9 6.3 Cont
15、rol of production and quality system 9 7 Marking 9 8 Packaging 9 Annex A (normative) Test method for the hydraulic characteristics of control valves providing flow regulation function 11 Annex B (normative) Test method for the hydraulic characteristics of control valves providing pressure regulation
16、 function . 12 Annex C (normative) Test method for the hydraulic characteristics of control valves providing level regulation function 13 Annex D (normative) Test method for the endurance of control valves 14Page 3 EN 1074-5:2000 BSI 03-2001 Foreword This European Standard has been prepared by Techn
17、ical Committee CEN /TC 69, Industrial valves, the Secretariat of which is held by AFNOR. EN 1074 consists of six parts: Part 1: General requirements; Part 2: Isolating valves; Part 3: Check valves; Part: Air valves; Part 5: Control valves; Part 6: Hydrants. Part 1, in conjunction with the subsequent
18、 parts, lays down the general requirements and test procedures to be carried out in production and during the assessment of conformity of these valves (type tests). The detailed requirements, which depend on the types of valves, are defined in parts 2 to 6 of this standard. This European Standard sh
19、all be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2001, and conflicting national standards shall be withdrawn at the latest by July 2001. According to the CEN/CENELEC Internal Regulations, the national standards organi
20、zations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.Page 4 EN 1074-5:2000 B
21、SI 03-2001 Introduction In respect of potential adverse effects on the quality of water intended for human consumption caused by the product covered by this standard: a) this standard provides no information as to whether the product may be used without restriction in any of the Member States of the
22、 EU or EFTA; b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force.Page 5 EN 1074-5:2000 BSI 03-2001 1 Scope This European Standard defines the minimum fitne
23、ss for purpose requirements for automatic control valves providing a regulation function to be used in, or connected to, water supply pipe systems, above or below ground (see EN 805), carrying water intended for human consumption. This standard specifies the design requirements, the performance requ
24、irements and the conformity assessment method for control valves, whatever their type and materials. This standard applies in priority to any other product or test standard: the requirements from other standards apply only when this standard refers to them. This part of EN 1074 deals with the requir
25、ements applicable to control valves up to DN 2000 and PFA 6 bar to PFA 25 bar. This part of EN 1074 does not deal with the specific performances of the controlling system accessories, whether they be integrated or not, nor with the other components of such control systems e.g. pressure sensors, flow
26、 meters, level detectors, regulating devices, powered actuators, etc. Control valves manufactured in accordance with this standard are not intended for buried service. 2 Normative references This European Standard incorporates, by dated or undated references, provisions from other publications. Thes
27、e normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undate
28、d references the latest edition of the publication referred to applies (including amendments). EN 805, Water supply Requirements for systems and components outside buildings EN 1074-1:2000, Valves for water supply Fitness for purpose requirements and appropriate verification tests Part 1: General re
29、quirements EN 1074-2:2000, Valves for water supply Fitness for purpose requirements and appropriate verification tests Part 2: Isolating valves EN 1267, Valves Test of flow resistance using water as test fluid 3 Terms and definitions For the purposes of this standard, the terms and definitions given
30、 in EN 1074-1:2000 apply, together with the following terms and definitions. 3.1 control valve device intended to regulate, within specified limits, one of the following functions: flow rate; level; pressure (upstream or downstream).Page 6 EN 1074-5:2000 BSI 03-2001 Control valves are divided into t
31、wo types: 3.1.1 autonomous control valve these valves have integral capability to control the function using energy from the conveyed water by adjusting the position of the obturator they can be directly operated i.e. the force is applied (via a spring or diaphragm) directly to the obturator they ca
32、n be pilot operated i.e. the force is applied through an adjustable pilot valve 3.1.2 non-autonomous control valve these valves require an externally powered control system in order to regulate the specified function 4 Design requirements Control valves shall be designed in accordance with the desig
33、n requirements given in clause 4 of EN 1074-1:2000. Control valves with pressure control or level control function shall be seat tight when closed. The manufacturer shall indicate in the relevant technical documentation the working limits of the valve and any special conditions for installation and
34、commissioning. 5 Performance requirements 5.1 Mechanical strength 5.1.1 Resistance to internal pressure of the shell and of all pressure containing components Requirement and test shall be in accordance with 5.1.1 of EN 1074-1:2000. If the manufacturer indicates that any feature of the control valve
35、 is not designed to withstand a high pressure, he shall indicate in his technical documentation the appropriate means to be used (e.g. isolating valves of the control system), in order to protect them during the test. The features protected by these means shall be tested to the pressure given in 5.1
36、.2 of EN 1074-1:2000. 5.1.2 Resistance to differential pressure The valve shall comply with the requirement and test of 5.1.2 of EN 1074-1:2000. If a control valve is designed without seat tightness, the requirement and test for the obturator shall be modified as follows: the differential pressure w
37、hich the obturator shall withstand, shall be the lower of (1,5 x PM) bar and ( PM + 5) bar; where PM is the maximum differential pressure of the control valve in operation (value to be given by the manufacturer). After the test, the valve shall comply with the control performances of this standard (
38、see 5.3). 5.1.3 Resistance of valves to bending Bending resistance is an optional requirement for control valves; if bending resistance is claimed by the manufacturer, the requirement and test shall be in accordance with 5.1.3 of EN 1074-1:2000, for sizes DN 50 to DN 500. The bending moments M to be
39、 applied during the test shall be as given in Table 1 as a function of DN.Page 7 EN 1074-5:2000 BSI 03-2001 Table 1 Bending moments DN M Nm DN 50 525 DN 65 700 DN 80 750 DN 100 1 100 DN 125 1 600 DN 150 2 400 DN 200 3 600 DN 250 5 500 DN 300 7 500 DN 350 9 500 DN 400 12 000 DN 450 14 000 DN 500 16 5
40、00 5.1.4 Resistance of valves to operating loads This requirement is applicable only to control valves whose main obturator can be operated manually to over-ride the control function. Requirement shall be in accordance with 5.1.4 of EN 1074-1:2000. Test shall be in accordance with 5.1.4 of EN 1074-2
41、:2000. 5.2 Leak-tightness 5.2.1 Leak-tightness of the shell and of all pressure containing components 5.2.1.1 Leak-tightness to internal pressure Requirement and test shall be in accordance with 5.2.1.1 of EN 1074-1:2000. 5.2.1.2 Leak-tightness to external pressure Requirement and test shall be in a
42、ccordance with 5.2.1.2 of EN 1074-1:2000. 5.2.2 Seat tightness This subclause is only applicable 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, the leakage rate shall be the rate A, under the co
43、nditions defined in the manufacturers documentation. For other valves, the leakage rate shall be in accordance with the manufacturers documentation. Seat tightness shall be checked at the highest and lowest values of the differential pressure, as follows: 1,1 x PFA; the lowest differential pressure
44、allowed by the manufacturer in his documentation. In both cases, the requirement and test shall be in accordance with 5.2.2.1 of EN 1074-1:2000, with the values of the differential pressure as given in this subclause.Page 8 EN 1074-5:2000 BSI 03-2001 5.2.3 Maximum operating torque (MOT) for operatio
45、n and leak-tightness This requirement is applicable only to control valves whose main obturator can be operated manually to over-ride the control function. Requirement shall be in accordance with 5.2.3 of EN 1074-1:2000. Test shall be in accordance with 5.2.3 of EN 1074-2:2000. 5.2.4 Leak-tightness
46、of gearboxes to external pressure If applicable, requirement and test shall be in accordance with 5.2.4 of EN 1074-1:2000. 5.3 Hydraulic characteristics Testing is not required for control valves greater than DN 300. 5.3.1 Flow coefficient, K v Requirement shall be in accordance with 5.3 of EN 1074-
47、1:2000; the characteristic given by the manufacturer shall be the flow coefficient K v . For autonomous control valves, it shall be given in the fully open position. In the case of non-autonomous control valves, the manufacturer shall give it as a function of the opening position of the obturator. W
48、hen measured in accordance with the test method defined in EN 1267, the flow coefficient shall be within a range of 10 % of the value given by the manufacturer. 5.3.2 Regulation hydraulic characteristics This requirement is applicable firstly to autonomous control valves, and secondly to non-autonom
49、ous control valves where the manufacturer claims specific hydraulic characteristics linked to a designated control system. 5.3.2.1 Control valves providing flow regulation function When tested as defined in annex A, the values obtained shall be within the tolerances given in the manufacturers documentation. 5.3.2.2 Control valves providing pressure regulation function When tested as defined in annex B, the values obtained shall be within the tolerances given in the manufacturers documentati
