BS-5793-5-1984 IEC-60534-5-1982.pdf

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1、BRITISH STANDARD BS 5793-5: 1984 IEC 534-5: 1982 Industrial-process control valves Part 5: Specification for marking UDC 66.025:621.646.3-777 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5793-5:1984 This British Standard, having been p

2、repared under the direction of the Industrial-process Measurement and Control Standards Committee, was published under the authority of the Board of BSI and comes into effect on 28 September 1984 BSI 06-1999 The following BSI references relate to the work on this standard: Committee reference PCL/1

3、Draft for comment 80/23101 DC ISBN 0 580 13978 6 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Industrial-process Measurement and Control Standards Committee (PCL/-) to Technical Committee PCL/1 upon which the following bodies were rep

4、resented: British Gas Corporation British Pressure Gauge Manufacturers Association Department of Energy, Gas Standards Electricity Supply Industry in England and Wales Energy Industries Council Engineering Equipment and Materials Users Association GAMBICA (BEAMA Ltd.) Institution of Gas Engineers Na

5、tional Coal Board STC Water Regulations and Fittings Scheme The following bodies were also represented in the drafting of the standard, through subcommittees and panels: British Chemical Engineering Contractors Association British Valve Manufacturers Association Ltd. Department of Trade and Industry

6、, National Engineering Laboratory Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5793-5:1984 BSI 06-1999i Contents Page Committees responsibleInside front cover National f

7、orewordii 1Introduction1 2Scope1 3Definitions1 4Specification of marking1 5Marking symbols2 Table 1 Valve markings3 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5793-5:1984 ii BSI 06-1999 Natio

8、nal foreword This Part of BS 5793 has been prepared under the direction of the Industrial-process Measurement and Control Standards Committee. It is identical with IEC Publication 534-5:1982 “Industrial-process control valves Part 5: Marking” published by the International Electrotechnical Commissio

9、n (IEC). Terminology and conventions. The text of the international standard has been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in British Standards. Paragraph 2 of clause 2, Scope, is a re

10、quirement, and as such should be read in conjunction with clause 4, Specification of marking. For the purposes of this British Standard the scope of this specification is limited to those markings referred to as “mandatory” in the IEC text. The “supplementary” markings should be regarded as informat

11、ion which would normally be referred to in notes or in an appendix in British Standards. The Technical Committee has reviewed the provisions of IEC Publication 534-1 and ISO Publications 2084, 2229, 2604 and 5208, to which reference is made in the text, and has decided they are acceptable for use in

12、 conjunction with this standard. Related British Standards for ISO 2604 are BS 1501-1, BS 1501-2, BS 1501-3 and BS 1501-6, BS 1503, BS 3509-1 and BS 3509-2, BS 3602-1 and BS 3602-2, BS 3604 and BS 3606. A British Standard does not purport to include all the necessary provisions of a contract. Users

13、of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references International standardCorresponding British Standard ISO 5209:1977BS 5418:1979 Specification for marking of general purpo

14、se industrial valves (Identical) Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in

15、 the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5793-5:1984 BSI 06-19991 1 Introduction Identification of the correct type of control valve for a particular industrial-process control applic

16、ation requires that information denoting significant parameters of the valve be located on the valve. The methods of marking the information, based upon provisions of ISO Standard 5209, are described in this standard. 2 Scope This standard specifies mandatory and supplementary markings of control va

17、lves. Some mandatory markings may be inappropriate for some valves of very special design, and some supplementary markings may be appropriate only to specific types of control valves. It is recommended that the marking of all valves conform to this standard whenever possible unless otherwise agreed

18、between manufacturer and purchaser. Mandatory markings shall be located in such a way that markings remain permanently. Mandatory markings shall be integral with the valve body or on a plate (distinct from an identification plate) securely fixed to the body. The location of supplementary markings is

19、 also specified. Usually these are on an identification plate. This Part 5 supersedes Clause 7 of IEC Publication 534-1: Industrial-process Control Valves, Part 1: General Considerations. 3 Definitions All of the definitions given in Clause 2 of IEC Publication 534-1, shall apply with the following

20、additions: 3.1 nominal size (DN) a numerical designation of size which is common to all components in a piping system other than components designated by outside diameter. It is a convenient round number for reference purposes and is only loosely related to manufacturing dimensions. Nominal size is

21、designated by the letters “DN” followed by the appropriate number from the following series: 10; 15; 20; 25; 32; 40; 50; 65; 80; 100; 125; 150; 200; 250; 300; 350; 400; etc. 3.2 nominal pressure rating (PN) nominal pressure rating is designated by the letters “PN” (also referred to as the pressure n

22、umber) followed by an appropriate number from the following series: 2.5; 6; 10; 16; 20; 25; 40; 50; 64; 100; 150; 250; 420 it is a numerical designation which is a convenient round number for reference purposes the maximum working pressure is dependent on the conditions of use together with the type

23、 of material selected, and reference must be made to the appropriate pressure/temperature rating tables NOTEThe PN ratings are based on recommendations of ISO/TC 5/SC 2, ISO/TC 67/SC 2 and CEN/TC 74. PN 2.5, PN 6, PN 10, PN 16, PN 25 and PN 40 ratings are based on the flange system designated in ISO

24、 Standard 2084. PN 20, PN 50, PN 64, PN 100, PN 150, PN 250 and PN 420 ratings are based on the flange system designated in ISO Standard 2229. 4 Specification of marking 4.1 Marking of ratings 4.1.1 The marking of ratings corresponding to ISO Standard 2084 shall be as follows: PN 2.5; PN 6; PN 10; P

25、N 16; PN 25; PN 40. 4.1.2 The marking of ratings corresponding to ISO Standard 2229 shall be as follows: Class 125 and Class 150 shall be marked PN 20 (see Note 2); Class 250 and Class 300 shall be marked PN 50 (see Note 2); Class 400 shall be marked PN 64; Class 600 shall be marked PN 100; Class 90

26、0 shall be marked PN 150; Class 1 500 shall be marked PN 250; Class 2 500 shall be marked PN 420. NOTE 1Control valves may be marked with the appropriate “Class xx” as an interim measure on existing designs until such time as the classification recommended by ISO is confirmed. NOTE 2Cast-iron contro

27、l valves rated Class 125 and Class 250 have bolting dimensions identical to Classes 150 and 300, respectively. 4.2 Location of markings Table 1 shows data, both mandatory and supplementary, which are appropriate to the marking of control valves. 4.2.1 Mandatory markings on the valve body Markings wh

28、ich are listed in Table 1 as mandatory markings shall be integral with the body or shall be on a plate securely fixed to the body, unless sufficient space is not available (see Sub-clause 4.2.4). Mandatory markings on the body include Items 1 to 5 of Table 1 which apply to all control valves, and It

29、ems 6, 7, 8, 11 and 12, where applicable, which apply to control valves of special construction or valves for specific applications. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5793-5:1984 2 BSI 06-1999 4.2.2 Mandatory markings on fla

30、nges or end connections Items 9 and 10 in Table 1 shall be marked only on the flanges or end connections, as applicable. 4.2.3 Supplementary markings Markings listed as supplementary markings in Table 1 shall be marked on a plate which may be positioned at any convenient location on the valve. If ma

31、rkings relate to characteristics likely to be changed by the user it is desirable to make the plate removable. Supplementary markings shall be used as appropriate to the design, or as agreed between manufacturer and purchaser. Markings not listed in Table 1 which are appropriate to a valve may be ad

32、ded as supplementary markings as agreed between manufacturer and purchaser. 4.2.4 Available space Where the physical size of a control valve governs the amount of space available for marking, control valves smaller than DN 50 may omit the mandatory markings on the body in the order 1, 6, 3 should th

33、e available space preclude their inclusion on the body. In such cases, the markings shall be included on the plate described in Sub-clause 4.2.3. 4.2.5 Additional markings Additional markings may be used at the option of the manufacturer provided they do not conflict with any of the specified markin

34、gs described above. A manufacturer having complied with the requirements listed above is not precluded from marking any item additionally in a place other than that specified. For example, a marking appearing on the body may also be repeated on the plate described in Sub-clause 4.2.3. 4.2.6 Safety-r

35、elated markings Control valves which have undergone special treatment, such as valves for use with oxygen, valves for nuclear service, etc., should be identified by an appropriate marking. 5 Marking symbols It is usually necessary due to space limitations to use abbreviations for many materials empl

36、oyed in the manufacture of control valves. Wherever possible it is preferable to use ISO references, which may be found in the various parts of ISO Standard 2604. NOTEAs an interim measure, it is permissible to use symbols which are based on national usage, but which have international recognition.

37、A typical example would be “CF8M” or “316” used for the specification of any 18 % Cr, 10 % Ni, 2.5 % Mo type of stainless steel. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5793-5:1984 BSI 06-19993 Table 1 Valve markings ItemsDescript

38、ion Category M = mandatory S = supplementary LocationRemarks 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. Nominal size (DN.) Nominal pressure rating (PN.) Material of body shell Manufacturers name or trade mark Serial number or other means of permanent identific

39、ation Melt identification Flow direction Inspectors stamp(s) Ring joint number (applicable to ISO Standard 2229) Thread or flange identification Maximum allowable working temperature K or C Maximum allowable working pressure kPa or bar Maximum allowable working differential pressure kPa or bar Manuf

40、acturers type, model or identification number Rated travel Rated flow coefficient (Av, Kv, Cv) Inherent flow characteristic (e.g. linear, equal percentage, or other) Material of trim Tag number Power failure position Permitted mounting attitudes Material of valve lining Actuator bench setting M M M

41、M M M M M M M M M S S S S S S S S S S S On valve body On valve body On valve body On valve body On valve body and plate If applicable, on valve body If applicable, on valve body If applicable, on valve body If applicable, on flanges If applicable, on body end connections If applicable, on plate If a

42、pplicable, on plate on plate on plate on plate on plate on plate on plate on plate on plate on plate on plate on plate See Sub-clauses 4.2.1 and 4.2.4 See Sub-clause 4.2.1 See Sub-clauses 4.2.1 and 4.2.4 See Sub-clause 4.2.1 See Sub-clause 4.2.1 See Sub-clauses 4.2.1 and 4.2.4 See Sub-clause 4.2.1 S

43、ee Note 1 See Sub-clause 4.2.1 See Sub-clause 4.2.2 See Sub-clause 4.2.2 See Note 2 See Note 2 See Note 3 Used only if not suitable for all attitudes NOTE 1If a valve may be used in either direction depending on application or instruction, the flow direction may be marked on a plate which permits re

44、versal of indicated flow direction by the user if flow direction is reversed. NOTE 2Items 11 and 12 are mandatory only where there is a limitation due to the design, method of manufacture, lining or other internal materials used which result in a de-rating of Items 2 and 10. NOTE 3To be specified on

45、ly if the control valve has an upper functional limit. NOTE 4Items listed in Table 1 are numbered for reference only within this part of the standard. No correlation exists between these item numbers and those shown in ISO Standard 5208. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:1

46、0 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5793-5:1984 BSI 06-1999 Publications referred to See national foreword. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:10 G

47、MT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5793-5: 1984 IEC 534-5: 1982 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the internation

48、al level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We woul

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