BS EN 13789-2010 Industrial valves - Cast iron globe valves《工业用阀 铸铁球阀》.pdf

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1、BS EN 13789:2010ICS 23.060.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDIndustrial valves Cast iron globe valvesThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 30 June2010 BSI 2010ISBN 978 0 580 68323 7A

2、mendments/corrigenda issued since publicationDate CommentsBS EN 13789:2010National forewordThis British Standard is the UK implementation of EN 13789:2010. Itsupersedes BS EN 13789:2002 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PSE/18/2, Industria

3、l valves, steam traps, actuators andsafety devices against excessive pressure - Gate, globe, diaphragm andcheck valves.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contra

4、ct. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 13789:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13789 May 2010 ICS 23.060.10 Supersedes EN 13789:2002English Version Industrial valves - Cast iro

5、n globe valves Robinetterie industrielle - Robinets soupape en fonte Industriearmaturen - Ventile aus Gusseisen This European Standard was approved by CEN on 9 April 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europea

6、n 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 CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English,

7、 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 CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cr

8、oatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDAR

9、DIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13789:2010: EBS EN 13789:2010EN 13789:2010 (E) 2 Conte

10、nts Page Foreword 31 Scope 42 Normative references 43 Terms and definitions . 54 Requirements . 54.1 Design . 54.1.1 Materials . 54.1.2 Pressure/temperature ratings . 54.1.3 Dimensions . 54.1.4 Operation 64.1.5 Auxiliary connections . 74.2 Functional characteristics 74.2.1 Shell design strength 74.2

11、.2 Flow characteristics 74.2.3 Allowable differential pressure 84.2.4 Seat tightness 84.2.5 Sizing the operating element 85 Test procedures . 86 Declaration of compliance 87 Designation 98 Marking and preparation for storage and transportation 98.1 Marking . 98.2 Preparation for storage and transpor

12、tation 9Annex A (informative) Information to be supplied by the purchaser . 11Annex B (informative) Comparison between EN and ISO cast iron material grades . 12Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC . 13Bibliography

13、14BS EN 13789:2010EN 13789:2010 (E) 3 Foreword This document (EN 13789:2010) has been prepared by Technical Committee CEN/TC 69 “Industrial valves”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identic

14、al text or by endorsement, at the latest by November 2010, and conflicting national standards shall be withdrawn at the latest by November 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held

15、responsible for identifying any or all such patent rights. This document supersedes EN 13789:2002. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 97/23/EC. For relati

16、onship with EU Directive, see informative Annex ZA, which is an integral part of this document. This document supersedes EN 13789:2002 where the following modifications were made: the normative references were updated in Clause 2, in 4.1.3.1, in 4.2.4, in 5.1 and in Table B.1; 4.1.1.1 was revised to

17、 take into account the publication of EN 12516-4:2008; 4.1.2.1, 4.2.1 and Table ZA.1 were revised to be in compliance with EU Directive 97/23/EC (PED); Annex B became informative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are b

18、ound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain

19、, Sweden, Switzerland and the United Kingdom. BS EN 13789:2010EN 13789:2010 (E) 4 1 Scope This European Standard specifies the requirements for cast iron globe valves in straight, angle or oblique pattern (see EN 736-2) with flanged or threaded end connections. This European Standard is applicable t

20、o cast iron globe valves mainly used for industrial and general purpose applications. However, they can be used for other applications provided the requirements of the relevant performance standards are met. The range of nominal sizes covered is: a) flanged: DN 10; DN 15; DN 20; DN 25; DN 32; DN 40;

21、 DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400. b) threaded: , , 1, 1, 1, 2. The range of pressure designations covered is: c) for flanged end valves: PN 6; PN 10; PN 16; PN 25; PN 40; d) for threaded end valves: PN 6; PN 10; PN 16. 2 Normative references The fo

22、llowing 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 referenced document (including any amendments) applies. EN 19, Industrial valves Marking of metallic valves EN

23、558, Industrial valves Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems PN and Class designated valves EN 736-1:1995, Valves Terminology Part 1: Definition of types of valves EN 736-2:1997, Valves Terminology Part 2: Definition of components of valves EN 736

24、-3:2008, Valves Terminology Part 3: Definition of terms EN 1092-2, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 2: Cast iron flanges EN 1563:1997, Founding Spheroidal graphite cast irons EN 12266-1, Industrial valves Testing of valves Part

25、 1: Pressure tests, test procedures and acceptance criteria Mandatory requirements EN 12266-2, Industrial valves Testing of valves Part 2: Tests, test procedures and acceptance criteria Supplementary requirements EN 12351, Industrial valves Protective caps for valves with flanged connections BS EN 1

26、3789:2010EN 13789:2010 (E) 5 EN 12516-3, Valves Shell design strength Part 3: Experimental method EN 12516-4, Industrial valves Shell design strength Part 4: Calculation method for valve shells manufactured in metallic materials other than steel EN 12570, Industrial valves Method for sizing the oper

27、ating element EN ISO 5210, Industrial valves Multi-turn valve actuator attachments (ISO 5210:1991) ISO 7-1:1994, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation 3 Terms and definitions For the purposes of this document, the terms and de

28、finitions of types of valves and components and the terms and definitions given in EN 736-1:1995, EN 736-2:1997 and EN 736-3:2008 apply. NOTE The terms maximum allowable pressure, PS, and test pressure, PT, defined in EU Directive 97/23/EC (PED) are equivalent to the terms allowable pressure, ps, an

29、d test pressure, pt, defined in EN 736-3:2008. 4 Requirements 4.1 Design 4.1.1 Materials 4.1.1.1 The body and bonnet materials shall be selected from EN 12516-4. For PN 40 rated valves, spheroidal graphite cast iron only shall be used. 4.1.1.2 The manufacturer shall declare the materials of construc

30、tion and any coatings of components in contact with the line fluid from which the suitability of the valve for the application can be determined. 4.1.1.3 Welding of grey cast iron and impregnation of castings of all materials is not permitted. 4.1.2 Pressure/temperature ratings 4.1.2.1 The pressure/

31、temperature ratings shall be in accordance with EN 1092-2. NOTE Annex B may be used to determine the equivalent ISO material grade for the EN material grades specified in 4.1.1.1. 4.1.2.2 Any restrictions of temperature and/or pressure below those specified in EN 1092-2, for example, those imposed b

32、y soft seals, special trims, shall be indicated on the valve (see 8.1.2). 4.1.2.3 The use of valves at lower temperatures than shown in the pressure/temperature rating tables in EN 1092-2 is permitted providing that the body and bonnet is manufactured from spheroidal graphite cast iron material grad

33、es EN-GJS-350-22-LT or EN-GJS-400-18-LT. For temperatures below the lowest temperature shown in the rating tables the maximum allowable pressure shall be no greater than the pressure corresponding to the lowest temperature in the rating tables. The lowest scheduled operating temperature shall be not

34、 less than the temperature specified in EN 1563 for the Charpy impact tests. 4.1.3 Dimensions 4.1.3.1 Face-to-face, centre-to-face and end-to-end dimensions Face to face and centre-to-face dimensions of flanged valves shall be in accordance with EN 558 and specified by the purchaser (see Annex A). B

35、S EN 13789:2010EN 13789:2010 (E) 6 The end-to-end dimensions of threaded end valves are at the choice of the manufacturer. 4.1.3.2 Body ends Flanged ends shall be in accordance with the requirements of EN 1092-2. Threaded ends shall be of the internal form in accordance with Type Rcor Rpto ISO 7-1:1

36、994. 4.1.3.3 Body end port inside diameter The body end port shall be circular. For unlined valves, the body end port inside diameter shall be not less than the nominal inside diameter specified in Table 1. 4.1.4 Operation 4.1.4.1 Operating device Unless otherwise specified by the purchaser, the val

37、ve shall be supplied with a handwheel. If the valve is to be operated by an actuator, then the valve/actuator attachment shall be in accordance with EN ISO 5210 for multi-turn actuators. For linear actuators, the valve/actuator attachment is the choice of the manufacturer. 4.1.4.2 Operating directio

38、n The valve shall be closed by turning the handwheel in a clockwise direction when viewed from above the handwheel. Marking of the handwheel shall be in accordance with EN 19. BS EN 13789:2010EN 13789:2010 (E) 7 Table 1 Nominal inside diameter of the body end port Dimensions in millimetres Size PN 6

39、 PN 10 PN 16 PN 25 PN 40 DN 10 DN 15 DN 20 DN 25 DN 32 DN 40 10 15 20 25 31 40 10 15 20 25 31 40 10 15 20 25 31 40 10 13 19 25 31 38 10 13 19 25 31 38 DN 50 DN 65 DN 80 50 63 76 50 63 76 50 63 76 50 63 76 50 63 76 DN 100 DN 125 DN 150 100 125 150 100 125 150 100 125 150 100 125 150 100 125 150 DN 20

40、0 DN 250 DN 300 DN 350 200 250 300 343 200 250 300 343 200 250 300 343 200 250 300 336 200 250 300 336 DN 400 394 394 394 387 387 4.1.5 Auxiliary connections When auxiliary connections are required, they shall be specified by the purchaser and shall be of the internal threaded form in accordance wit

41、h Type Rcor Rpto ISO 7-1:1994. 4.2 Functional characteristics 4.2.1 Shell design strength The shell design strength shall be: a) based on a calculation design method supplemented if necessary by an experimental design method in accordance with EN 12516-3; or b) verified by an experimental design tes

42、t in accordance with EN 12516-3, but limited to a maximum of 3 000 bar x DN. 4.2.2 Flow characteristics 4.2.2.1 The seat bore shall be either full bore or reduced bore. It is permissible for any disc guides and/or lugs required to facilitate the fitting of seat rings to intrude into the bore of the

43、valve. 4.2.2.2 Globe valves shall be suitable for flow in either direction or in one direction. BS EN 13789:2010EN 13789:2010 (E) 8 4.2.2.3 Globe valves may be used as regulating valves in which case they shall be supplied with a profiled obturator, e.g. parabolic or conical. 4.2.3 Allowable differe

44、ntial pressure All valves with size and pressure designation combinations above the marked step-line in Table 2 shall be capable of isolating the flow in the allowed direction (see 4.2.2.2 and 4.2.2.3) with the differential pressure across the obturator equal to the maximum allowable pressure at 20C

45、. All valves with size and pressure designation combinations below the step-line in Table 2 shall be capable of isolating the flow in the allowed direction (see 4.2.2.2 and 4.2.2.3) with the restricted differential pressure across the obturator equal to the pressure specified in Table 2. The purchas

46、er may specify a higher differential pressure up to the maximum allowable pressure at 20 C, against which the valve shall be capable of isolating the flow with the upstream pressure under the obturator. Table 2 Allowable differential pressure PN Allowable differential pressurebar DN 10 to DN 100 DN

47、125 DN 150 DN 200 DN 250 DN 300 DN 350 DN 400 PN 6 6 6 6 6 6 6 4,5 3,5 PN 10 10 10 10 10 9 6 4,5 3,5 PN 16 16 16 16 14 9 6 4,5 3,5 PN 25 25 25 21 14 9 6 4,5 3,5 PN 40 40 33 21 14 9 6 4,5 3,5 4.2.4 Seat tightness The allowable rate for the seat tightness test specified in EN 12266-1 shall be Rate A.

48、The allowable rate for the back seat tightness test specified in EN 12266-2 shall be Rate C. 4.2.5 Sizing the operating element For handwheel operated valves, the minimum size of the handwheel shall be determined in accordance with EN 12570. The handwheel size shall be selected such that the valve c

49、an be operated when the line pressure is equal to the maximum allowable pressure at 20 C and can be seated or unseated against a differential pressure of not less than the allowable differential pressure at 20 C as given in Table 2. When specified by the purchaser it is permitted to use a lower fluid pressure than the maximum allowable pressure at 20 C and differential pressure less than that given in Table 2, for the determination of handwheel size. 5 Te