BS MA 5-1970 Specification for brass service nameplates for valves《阀门黄铜名牌规范》.pdf

1、BSI BS*MA*5 70 m 3bZ4bb 0338434 II m I METRIC UNITS BS MA 5 : 1970 UDC 629.12.018.811:669.355:621.646.2 INCORPORATED BY ROYAL CHARTER Telephone : O1 - 629 9ooo BRITISH STANDARDS INSTITUTION British Standards House, 2 Park Street, London WlY 4AA Telegrams : STANDARDS LONDON W1 BRITISH STANDARD : MARI

2、NE SERIES SPECIFICATION FOR BRASS SERVICE NAMEPLATES FOR VALVES FOREWORD This British Standard has been prepared under the authority of the Shipbuilding and Marine Industry Standards Committee, and is based on a proposal of the British Ship Research Association. Purchasers of valves intended for mar

3、ine service, are urged to specify nameplates conforming to this specification as a first preference. Their attantion is particularly drawn to Clauses 4 and 8. This standard makes reference to the following British Standards: BS 2591. Glossary for valves and valve parts (for fluids). BS 2870. Rolled

4、copper and copper alloys, sheet strip and -SC_-. -1 4 -tqed 1 BS 4174. Self-tapping screws and metallic drive screws. SPECIFICATION NOTE. Users of this British Standard, Marine Series, should note t&t while observing the requirements of th standard they should at the same time ensure compliance with

5、 such statutory requirements, -%s ru es an may be applicable to the individual ship concerned. 1. SCOPE 1.1 This British Standard relates to two types of nameplates suitable for general application on all valves and cocks intended for marine duty. The standard specifies the dimensions of plate and i

6、nscription to be used, material, quality of manufacture and engraving, and allows for ident- ification of individual nameplates at the request of the purchaser. 1.2 The attention of the purchaser is particuIarly drawn to information to be supplied with an enquiry or order. 1.3 For the purposes of th

7、is standard the term valve will be assumed to include cocks and any other means of controlling fluid flow, such as are defined in BS 2591. O 2. TYPES AND DIMENSIONS 2.1 Nameplates manufactured in accordance with this British Standard shall be to either of the following designs: (1) Circular type, ap

8、plicable when the valve has its handwheel fixed to the stem. or (2) Rectangular type, applicable when condi- tions make the fitting of a circular type impractic- able. The details of the above types shalI be as set -t out in Tables 1 and 2 respectively. 2.2 Also listed in the tables are recommended

9、ranges of valve sizes (by nominal bores) for which the res- pective nameplates should be used. 3. MATERIAL The nameplates shall be made of brass to BS 2870 CZ118 or CZ119, and have a thickness of 15 mm. 4. ORDERING AND FITTING OF NAMEPLATES The ordering and fitting of the nameplates shall be the res

10、ponsibility of the purchaser of the valve. 5. ENGRAVING OF INSCRIPTION 5.1 The inscription relating to the valve shall be permanently marked by an engraving process on the face side of the nameplate, to a depth of not less than 0.5 mm. 5.2 The engraved characters, including letters and integers, sha

11、ll have the heights set out in Tables 1 or 2, according to the type and size of the name- plate. 5.3 All characters shall be of the sans-serif upper case type, clearly legible, and finished black. An alternative finish may be adopted when so speci- fied by the purchaser. I BSI BS*MA*5 70 m Lb24bb7 0

12、338435 3 m 1 - BS MA 5 : 1970 5.4 The total number of characters and included spaces between words shall not normally exceed that given in Table 1 and Table 2 respectively. 5.4.1 On circular plates, the characters shall be aligned on a single arc positioned concentric with the periphery of the plate

13、 The beginning and the ending of the inscription shall be separated by a gap subtending an angle of not less than 45 at the centre of the plate, as shown in Table 1. 5.4.2 On rectangular plates, the inscription shall be aligned in parallel rows, spaced equidistant from each other and from the longe

14、r sides of the plate, as shown in Table 2. Where one row onlyof characters is required this shall be positioned centrally on the plate. No character shall lie closer than 5 mm to the short sides of the plate. 5.4.3 Care shall be excerized in the use of abbre- viated expressions to ensure correct int

15、erpretation and this applies especially when the instructions are in a language with which the manufacture or purchaser are not fully acquainted, 6. QUALITY OF MANUFACTURE: INSPECTION AND FINISH 6.1 The manufacturer shall ensure by visual inspection that the nameplate complies with the requirements

16、of 5.4.1 or 5.4.2 and with the follow- ing 6.1.1 to 6.1.5, inclusive: 6.1.1 The nameplates are flat and free from pitting. 6.1.2 The central hole in circular nameplates, where provided, is concentric with the periphery. 6.1.3 The letters and spacing are uniform. 6.1.4 All plate edges are finished sm

17、ooth. 6.1.5 The face side of the nameplate has a bright finish. 7. IDENTIFICATION 7.1 When specified by the purchaser, additional characters shall be inscribed on the reverse side of the nameplate, for the purposes of identification, as set out in 7.1.1 and 7.1.2: 7.1.1 An identification serial refe

18、rence, corres- ponding to that of the valve for which the name- plate is intended, shall be permanently inscribed thereon. Nameplates marked in this manner shall be grouped in sequence according to their identifi- cation serial reference, when packaged for despatch to the purchaser. 7.1.2 A translat

19、ion of the face side inscription into another language as specified by the purchaser This marking may be of an impermanent nature. 8. INFORMATION TO BE SUPPLIED WITH AN ENQUIRY OR ORDER The following information shall be supplied by the purchaser when placing an enquiry or order for nameplates to th

20、is standard: BS MA 5. (1) The number of this British Standard, i.e. (2) The type of nameplate required (see Clause 2). (3) The size of nameplate required (see Tables (4) The inscription required (see Clause 5) (5) The colour of finish of inscription, if other (6) The valve identification reference,

21、where 1 and 2). than black (see 5.3). required in the manner specified in 7.1. APPENDIX A INSTALLATION OF NAMEPLATES (For the guidance of the purchaser) A. 1 General A. 1.1 The nameplate should be installed and secur- ed in such a position as to enable the inscription to be readily observed. (This s

22、hould be borne in mind when a choice between a circular or a rectangular type is to be made.) A. 1.2 Nameplates should normally be installed in the manner described in A.2 or A.3 respectively. Alternatively, and with the agreement of the regula- tory bodies concerned, the nameplate may be sep- arate

23、ly mounted in a position adjacent to the valve, such that there is no reasonable doubt as to which valve the nameplate refers. A. 2 Circular type A.2.1 The nameplate should be secured to the valve stem by the handwheel nut or bolt. A. 3 Rectangular type A.3.1 The nameplate should be secured to the v

24、alve by two No. 4 roundhead (type U) metallic drive scr- ews 8 mm in length. This securing may be made on the circumferential surface of either the bonnet fla- nge or the end connection flange, but not on any pre- ssure-containing part. 2 BS MA 5 : 1970 TABLE 1. DETAILS OF CIRCULAR NAMEPLATE min. Al

25、l dimensions are in millimetres of valve sizes (nomina bore) NOTE 1. The central locating hole may be omitted, or have its diameter varied when so specified by the purchaser. NOTE 2. The 45O arc shown on the above diagram represents the minimum value of the gap separating the beginning and ending of

26、 the inscription (see 5.4.1). BSI CERTIFICATION TRADE MARK (THE KITENARK) The British Standards Institution is the owner of a registered certfication trade mark. It is usually associated with the words approved to British Standard as shown below, the number of the relevant British Standard being add

27、ed. This mark may be used only by those licensed under the certification mark scheme operated by BSI. The presence of this mark on or in relation to a product is an assurance that the goods have been produced under a system of super- vision, control and testing, operated during manufac- ture and inc

28、luding periodical inspection of the manufacturers works in accordance with the certification mark scheme of BSI designed to ensure compliance with a British Standard. Further particulars of the terms of licence may be obtained from the Certification Marks Section, British Standards Institution, 2 Pa

29、rk Street, London, WIY 4AA. 3 ES1 BS*MA*5 70 1624669 0138i.137 7 W I ii BS MA 5 : 1970 /t e TABLE 2. DETAILS OF RECTANGULAR NAMEPLATES 80 80 20 3 3 5 12 24 50 - 300 32 3 3 6 9 18 350 and over All dimensions are in millimetres I I I Recommended total 1 La 1 Heif 1 number and oI spaces characters 1 Re

30、commended range of valve sizes (nominal bores) nameplate characters Single Double line line Dim. This British Standard, having been approved by the Shipbuilding & Marine Industry Standards Committee, was published under the authority of the Executive Board on 30 July, 1970. The Institution desires t

31、o call attention to the fact that this British Standard does not purport to include all the necessary provisions of a contract. In order to keep abreast of progress in the industries concerned, British Standards are subject to periodical review, Suggestions for improvements will be recorded and in d

32、ue course brought to the notice of the committees charged with the revision of the standards to which they refer. A complete list of British Standards, numbering over 5000, fully indexed and with a note of the contents of each, will be found in the British Standards Yearbook, price &l. The BS Yearbo

33、ok may be consulted in many public libraries and similar institutions. British Standards are revised, when necessary, by the issue either of amendment slips or of revised editions. It is important that users of British Standards should ascertain that they are in possession of the latest amendments or editions. The following BSI references relate to the work on this standard: Committee reference SM E/ 2 Draft for approval G9/10531 SBN: 580 0612 O (Printed in England by Gaylard k Son, Ltd., London)