BS 5154-1991 Specification for copper alloy globe globe stop and check check and gate valves《铜合金球形阀、球形截流和止回阀、止回和闸阀规范》.pdf

1、BRITISH STANDARD BS 5154:1991 Specification for Copper alloy globe, globe stop and check, check and gate valvesBS5154:1991 This British Standard, having been prepared under the directionof the Piping Systems Components Standards Policy Committee, was published underthe authority of the Standards Boa

2、rd and comes intoeffect on 31 May 1991 BSI 02-1999 First published as BS 1952, BS1953 and BS 2060 in 1953 and1956 Second editions (separately) October 1964 Metric edition, as BS 5154, October 1974 Third edition December 1983 Fourth edition July 1989 Fifth edition May 1991 The following BSI reference

3、s relate to the work on this standard: Committee reference PSE/7 Draft for comment 90/76614 DC ISBN 0 580 19619 4 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Piping Systems Components Standards Policy Committee (PSE/-) to Technical C

4、ommittee PSE/7, upon which the following bodies were represented: Amalgamated Union of Engineering Workers Associated Offices Technical Committee Association of Bronze and Brass Founders Association of Building Component Manufacturers Ltd. British Chemical Engineering Contractors Association British

5、 Compressed Gases Association British Foundry Association British Gas plc British Maritime Technology British Plumbing Fittings Manufacturers Association British Shipbuilders British Valve and Actuator Manufacturers Association Chartered Institution of Building Services Engineers Copper Development

6、Association Department of the Environment (Property Services Agency) Electricity Supply Industry in England and Wales Energy Industries Council Engineering Equipment and Materials Users Association GAMBICA (BEAMA Ltd.) Health and Safety Executive Institute of British Foundrymen Institution of Chemic

7、al Engineers Institution of Gas Engineers Institution of Mechanical Engineers Institution of Water this standard specifies requirements for design and manufacture but not for installation and maintenance, guidance on which is given in BS6683. This standard allows options to the standard product, the

8、 preferred option being indicated by a note to the appropriate clause. Particular requirements should be indicated by the purchaser, as stated in Appendix A, otherwise the manufacturer will supply the product with the following preferred options: a) means of operation (see9.9.2); b) direction of ope

9、rating effort to close (see9.9.2); c) trim materials (see10.1); d) flange ends drilled (see8.1.1). Throughout this standard, all pressures specified are gauge pressures. Safety Code. For purchasers of valves to BS5154, it is emphasized that strict compliance with the manufacturers instructions and r

10、ecommendations for installation, usage and maintenance is necessary. Where there is an appropriate application standard or code of practice, it is the responsibility of the purchaser to ensure that such requirements are complied with, e.g. attention is drawn to BS759-1. A British Standard does not p

11、urport 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 legal obligations. Summary of pages This document comprises a front cover, an inside fron

12、t cover, pages i and ii, pages1 to 18, 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 the amendment table on theinside front cover.BS5154:1991 BSI 02-1999 1 Section 1. General 1 Scope Thi

13、s British Standard specifies design, details of body ends, materials, test requirements, marking and preparation for storage and transportation, of copper alloy valves of globe, globe stop and check, check and gate types of the sizes specified in clause5 and the pressure designation given in clause6

14、. Two valve series, A and B, are specified (seeclause3), each series differing in its maximum temperature ratings. The reclamation of valves through the impregnation of castings is a recognized practice within this standard but the impregnation process is not defined. NOTE 1The titles of the publica

15、tions referred to in this standard are listed on the inside back cover. NOTE 2Valves which have failed the initial shell pressure test may be reclaimed, using an impregnation process which is permitted only by written approval of the purchaser and his acceptance of the manufacturers proposed method

16、of reclamation. 2 Definitions For the purposes of this British Standard the following definitions apply. 2.1 nominal size (DN) a numerical designation of size that is common to all components in piping systems other than those components designated by outside diameters or by thread size. It is a con

17、venient round number for reference purposes and it is normally only loosely related to manufacturing dimensions NOTE 1Nominal size is designated by the letters DN followed by a number, e.g. DN100. NOTE 2This definition is identical with that given in ISO6708, published by the International Organizat

18、ion for Standardization (ISO). 2.2 nominal pressure (PN) a numerical designation which is a convenient rounded number for reference purposes. All equipment of the same nominal size (DN) designated by the same PN number shall have compatible mating dimensions NOTE 1The maximum allowable working press

19、ure depends on materials, design and working temperatures and should be selected from the tables of pressure/temperature ratings given in this standard. NOTE 2Nominal pressure is designated by the letters “PN” followed by the appropriate reference number, e.g. PN10 NOTE 3This definition is identical

20、 to the definition given in ISO7268. 2.3 class a numerical designation for reference purposes NOTE 1The maximum allowable working pressure depends on materials, design and working temperatures, and should be selected from the tables of pressure/temperature ratings given in this standard. NOTE 2Class

21、 is designated by the word Class followed by the appropriate reference number. 2.4 face-to-face dimensions (for straight pattern flanged valves) the distance, expressed in millimetres, between the two planes perpendicular to the valve axis located at the extremities of the body end ports 2.5 centre-

22、to-face dimensions (for angle pattern flanged valves) the distance, expressed in millimetres, between the plane located at the extremity of either body end port and perpendicular to its axis and the other body end port axis 2.6 impregnation the process whereby the porosity within a casting is impreg

23、nated with a fluid sealant which is subsequently polymerized to produce a solid seal 3 Valve series 3.1 Series A valves The upper temperature limit for series A valves shall be (seeTable 2 in respect of pressure/temperature ratings): a) a temperature of260C for flanged and threaded valves with metal

24、lic disk and seating surface materials; or b) the temperature limitation of the disk material or the impregnation process if such is below260C, when the valve is fitted with renewable non-metallic disks and/or constructed from an impregnated casting. NOTE 1Series A valves are only specified with fla

25、nged or threaded ends. NOTE 2Temperature limitations of the disk material and/or impregnation process are marked by the manufacturer (see12.2). 3.2 Series B valves 3.2.1 Valves with metallic disks and seats. Except where the valve has been constructed from an impregnated casting, pressure and temper

26、ature limitations for series B valves with metallic disk and seat materials shall be as specified in clause7. NOTE 1The temperature limitations for series B valves with flanged or threaded ends are given inTable 2 and with capillary or compression ends inTable 3. NOTE 2Temperature limitations of val

27、ves constructed from impregnated castings are marked by the manufacturer (see12.2)BS5154:1991 2 BSI 02-1999 3.2.2 Valves with non-metallic disks. The pressure and temperature limitations for series B valves with renewable non-metallic disks and/or impregnated castings shall be the temperature limita

28、tion of the disk material and/or the impregnation process when such is lower than that specified in clause7. 4 Types of valves 4.1 General Valves shall be one of the types specified in4.2 to4.4, having flanged, threaded, capillary or compression ends, integral or renewable body seats and screwed, un

29、ion or bolted bonnets or covers. 4.2 Globe valves and globe stop and check valves The valves shall be of the rising stem type with inside or outside screw of one of the following body patterns: a) straight; b) angle; c) oblique, or Y pattern. 4.3 Check valves Check valves shall be one of the followi

30、ng types: a) swing type, for use with the axis of the body ports horizontal or vertical 1) ; b) lift type of the following designs and body patterns: 1) piston: i) straight; ii) angle; 2) disk: i) straight; ii) vertical; iii) angle. 4.4 Gate valves Gate valves shall be either of the inside screw typ

31、e with rising or non-rising stem or of the outside screw type with rising stem. In either case they shall be of one of the following types: a) solid or split wedge; b) double disk; c) parallel slide. 5 Size ranges 5.1 Flanged ends The nominal sizes of flanged ends for valves designated by nominal pr

32、essure (PN) and Class shall be as shown inTable 1. 5.2 Threaded ends Threaded ends in accordance with either BS21 or ANSI/ASME B1.20.1 shall be as follows: , , , , 1, 1, 1, 2, 2, 3, 4. 5.3 Capillary or compression ends in accordance with BS 864-2 The pipe outside diameters, expressed in millimetres,

33、 for use with capillary or compression ends in accordance with BS864-2, shall be as follows: 8,10,12,15,18,22,28,35,42,54,67. 6 Pressure designations 6.1 Flanged ends Flanged valves shall be designated by nominal pressure (PN) or Class, as appropriate, and selected from the following: PN16, Class150

34、, PN25, PN40, Class300. 6.2 Threaded ends Threaded valves shall be designated by nominal pressure (PN) and selected from the following: PN16, PN20, PN25, PN32, PN40. 6.3 Capillary and compression ends Valves with capillary or compression ends shall not have pressure designations. 7 Pressure/temperat

35、ure ratings Valves with flanged or threaded ends shall have the maximum pressure/temperature ratings for fluids given inTable 2. Valves with capillary or compression ends shall have the maximum pressure/temperature rating for fluids given inTable 3. Subject to the limitations of clause3, valves with

36、 non-metallic disks and/or impregnated castings shall have the maximum temperature limitation of the non-metallic disk and/or the impregnation process. The marking of such valves shall be in accordance with clause12. 8 Dimensions and tolerances of body ends 8.1 Flanged ends 8.1.1 Dimensions of flang

37、es. Dimensions of flanges shall be in accordance with BS4504-3.3 for PN16, PN25, and PN40 valves and in accordance with BS1560-3.3 for Class150 and Class300 valves. NOTE 1Flanged ends may be supplied undrilled (seeAppendix A). NOTE 2Attention is drawn to requirements for joint faces in BS4504-3.3 an

38、d BS1560-3.3. 1) Swing check valves can only be used in vertical lines when the flow is in an upward direction.BS5154:1991 BSI 02-1999 3 8.1.2 Face-to-face and centre-to-face dimensions. Face-to-face and centre-to-face dimensions of flanged valves shall be as given inTable 4 for other than oblique p

39、attern globe or oblique pattern lift check valves. NOTEFace-to-face and centre-to-face dimensions for oblique pattern valves are not specified; they are at the manufacturers option. 8.1.3 Tolerances on face-to-face and centre-to-face dimensions. The tolerances on face-to-face dimensions and centre-t

40、o-face dimensions of flanged valves shall be 2.0mm. 8.1.4 Tolerance on alignment 8.1.4.1 Straight and oblique pattern valves. Jointing faces of body end flanges shall be machine finished at90 0.5 and concentric to a common centre line passing through the body end ports. 8.1.4.2 Angle pattern valves.

41、 Jointing faces of body end flanges shall be machine finished at90 0.5 and concentric to the centre line of the body end ports, and at right angles to each other. 8.2 Threaded ends 8.2.1 Threads. Internal thread dimensions shall be in accordance with BS21, BS2779 or ANSI/ASME B1.20.1, published by t

42、he American National Standards Institute. 8.2.2 End sealing faces. End sealing faces for parallel threads in accordance with BS2779 shall have a smooth finish at90 to the thread axis and shall have minimum outside diameters in accordance withTable 5. 8.2.3 Alignment. The axes of the threaded inlet a

43、nd outlet ends shall be within1.0 of the angle specified. 8.2.4 Thread chamfer. The lead-in of all body end threads shall be chamfered at an angle of approximately45 to the axis of the thread, the diameter of chamfer at the face being not less than the major diameter of the thread. The chamfer shall

44、 be concentric with the thread and shall be included in the measurement of the thread length. 8.2.5 Body end shapes. Body ends shall incorporate a method of holding the valve securely during installation, e.g. hexagon or provision for a C spanner. Table 1 Nominal sizes of valves according to PN or Class designation PN designated valves DN 10 DN 15 DN 20 DN 25 DN 32 DN 40 DN 50 DN 65 DN 80 DN 100 Class designated valves 1 1 1 2 2 3 4