1、BRITISH STANDARD CONFIRMED NOVEMBER 1983 BS 1873:1975 Incorporating Amendment No. 1 Specification for Steel globe and globe stop and check valves (flanged and butt-welding ends) for the petroleum, petrochemical and allied industries UDC 621.646.2:669.14:622.323 + 662.753 + 665.6BS1873:1975 This Brit
2、ish Standard, having been approved by the Petroleum Equipment Industry Standards Committee, was published underthe authority of the Executive Board on 30 April 1975 BSI 09-1999 First published July 1952 First revision March 1960 Second revision April 1975 The following BSI references relate to the w
3、ork on this standard: Committee reference PEE/1 Draft for comment 72/35873 DC ISBN0 580 08502 3 Co-operating organizations The Petroleum Equipment Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government depar
4、tments and scientific and industrial organizations: British Gas Corporation British Mechanical Engineering Confederation British Rubber Manufacturers Association Ltd. British Steel Industry* Council of British Manufacturers of Petroleum Equipment* Department of Trade and Industry Oil Companies Mater
5、ials Association* The organizations marked with an asterisk in the above list, together with the following, were directly represented on the Committee entrusted with the preparation of this British Standard: Association of Hydraulic Equipment Manufacturers British Chemical Engineering Contractors As
6、sociation British Industrial Measuring and Control Apparatus Manufacturers Association British Plastics Federation British Ship Research Association British Valve Manufacturers Association Engineering Equipment Users Association Steel Castings Association Amendments issued since publication Amd. No.
7、 Date of issue Comments 6564 July 1990 Indicated by a sideline in the marginBS1873:1975 BSI 09-1999 i Contents Page Co-operating organizations Inside front cover Foreword iii Section 1. General 1 Scope 1 2 References 1 3 Nomenclature 1 4 Pressure classification 1 5 Pressure/temperature ratings 1 6 N
8、ominal sizes 1 7 Information to be supplied by the purchaser 1 Section 2. Design 8 Body 2 9 Bonnet 12 10 Disk, disk nut and disk thrust plate 13 11 Yoke 13 12 Handwheel 13 13 Stem and yoke bushes 13 14 Stuffing box, packing and lantern ring 13 15 Bolting 15 16 Operation 15 17 Bypass 15 18 Soft seal
9、rings 15 Section 3. Materials 19 Shell 16 20 Body seat rings 16 21 Bonnet gasket 16 22 Disk 16 23 Yoke 16 24 Disk thrust plate 16 25 Handwheel or chainwheel 16 26 Handwheel or chainwheel nut 16 27 Yoke bush 16 28 Yoke bush retaining nut 16 29 Gland 16 30 Trim 16 31 Lantern ring 17 32 Stem packing 17
10、 33 Bolting 17 34 Plugs 17 35 Nameplate 17 36 Soft seals 17 37 Special applications 17 Section 4. Marking 38 Required markings 19 39 Body and nameplate markings 19 40 Body and bonnet markings 19 41 Nameplate markings 19 42 Additional markings 19BS1873:1975 ii BSI 09-1999 Page 43 Body dividing wall m
11、arking 19 44 Omission of markings 19 Section 5. Testing 45 Production pressure testing 19 Section 6. Shipping 46 Preliminary 20 47 Preparation for despatch 20 48 Packaging 20 Appendix A Particular dimensions for each class of valve 21 Appendix B Application to piping systems with BS 4504 flanges 24
12、Figure 1 Typical straight pattern globe valve 3 Figure 2 Typical angle pattern globe valve 5 Figure 3 Typical oblique Y pattern globe valve 7 Figure 4 Typical stop and check globe valves, straight pattern 9 Figure 5 Butt-welding ends 10 Figure 6 Location of tappings 11 Table 1 Stuffing box bore and
13、packing width 14 Table 2 Trim materials, hardness and acceptable specifications 18 Table 2(a) Test Duration 20 Table 3 Dimensions of Class 150 valves 21 Table 4 Dimensions of Class 300 valves 21 Table 5 Dimensions of Class 400 valves 22 Table 6 Dimensions of Class 600 valves 22 Table 7 Dimensions of
14、 Class 900 valves 22 Table 8 Dimensions of Class 1500 valves 23 Table 9 Dimensions of Class 2500 valves 23 Table 10 Nominal pressure and class ratings and nominal size range 24 Table 11 Table deleted 24 Publications referred to Inside back coverBS1873:1975 BSI 09-1999 iii Foreword This British Stand
15、ard is one of a series for valves prepared under the authority of the Petroleum Equipment Industry Standards Committee. It was first published in1952. It is a metricated revision except that class designations and body to bonnet bolting sizes have not been converted into metric units. Imperial units
16、 are also given for some dimensions in order to comply with established international petroleum practice. The previous sections dealing with face-to-face and end-to-end dimensions, inspection and test have now been omitted as these subjects have their own separate standards: BS 2080, “Face-to-face,
17、centre-to-face, end-to-end and centre-to-end dimensions of flanged and butt-welding end steel valves for the petroleum, petrochemical and allied industries”. BS 6755, Testing of valves Part 1: Specification for production pressure testing requirements. NOTE 1Requirements for final inspection and sup
18、plementary inspection or all stages of manufacture, previously specified in BS5146-1:1974 (now withdrawn) should be stated by the purchaser in his enquiry or order.” Compared with the first edition, angle pattern valves are now incorporated and the size range has been extended and is now aligned wit
19、h that of ANSI B16.10. The end flanges for valves are required to be in accordance with BS1560 “Steel pipe flanges and flanged fittings (nominal sizes ; in to24 in) for the petroleum industry”: Part 2 “Metric dimensions” (corresponding to ANSI B16.5) and butt-welding ends are generally in accordance
20、 with ANSI B16.25. It is intended that the valves complying with the requirements of this standard should be interchangeable as units with those in accordance with ANSI B16.10 dimensions. There is no equivalent American Standard. NOTE 2User requirements for valves generally in accordance with this s
21、tandard but suitable for use in piping systems with BS4504 “Flanges and bolting for pipes, valves and fittings. Metric series” flanges are dealt with inAppendix B. Acknowledgement is made to the American Petroleum Institute and to the American National Standards Institute for data used. The titles o
22、f the American standards referred to in this standard and the foreword are as follows: ANSI B 16.5 Steel pipe flanges and flanged fittings (including supplements) B 16.10 Face-to-face and end-to-end dimensions of ferrous valves B 16.25 Buttwelding ends API Std 5b Specification for threading, gaging,
23、 and thread inspection of casing, tubing and line pipe threads ASTM A 182 Forged or rolled alloy-steel pipe flanges, forged fittings and valves and parts for high temperature service A 276 Stainless and heat resisting steel bars and shapes A 351 Ferritic and austenitic steel castings for high temper
24、ature service B 124 Copper and copper alloy forging rod, bar and shapes B 138 Manganese bronze rod, bar and shapes B 148 Aluminium bronze sand castings B 150 Aluminium bronze rod, bar and shapes B 584 Copper alloy sand castings for general applicationsBS1873:1975 iv BSI 09-1999 A British Standard do
25、es 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 legal obligations. Summary of pages This document comprises a front cover, an ins
26、ide front cover, pages i to iv, pages1 to24, 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.BS1873:1975 BSI 09-1999 1 Section 1. General 1 Scop
27、e This British Standard specifies requirements for cast or forged carbon and alloy steel outside screw and yoke globe and globe stop and check valves, straight pattern, angle pattern and (oblique) Y pattern, with flanged or butt-welding ends in nominal sizes within the range of15mm to400mm (; in to1
28、6 in) and Classes150 to2500. This standard can also be used as a general guide where valves of material composition outside the scope of section three of this standard are required as, for example, for use in highly corrosive services or environments or for low temperatures (see clause37). The stand
29、ard can be adapted to apply to valves with needle type seats in15mm (; in) an20mm ( in) nominal sizes which will meet all requirements of this standard, except that the valve seat bore is reduced and the needle point may be either integral with or loose on the stem. 2 References The titles of the Br
30、itish Standards referred to in this standard are listed on the inside back cover. 3 Nomenclature For the purposes of this British Standard the nomenclature for valve parts shall be as shown inFigure 1 toFigure 4 which are also illustrative of some acceptable designs. 4 Pressure classification This s
31、tandard applies to valves of the following pressure class designations: Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500 and Class 2500. The numerals in these class designations represent the primary service pressure ratings of the valves in pounds-force per square inch. 5 Pressure/
32、temperature ratings The pressure/temperature ratings applicable to valves specified in this standard shall be in accordance with Tables PE-1 to PE-12 of AppendixA of BS1560-2:1970 for the particular shell material specified. There is, however, a temperature restriction on soft seals and on certain t
33、rim materials (see18.3 and30.5). Where valves in accordance with this standard are to be used at service temperatures below 30 C, reference should be made to BS3351. Service temperature refers to the temperature of the fluid in the line at the valve. 6 Nominal sizes This standard covers valves of th
34、e following nominal sizes: 7 Information to be supplied by the purchaser Certain clauses of this standard permit alternatives and the purchaser may require features which depart from the requirements of this standard. The purchaser should state in the enquiry and order the following (the items marke
35、d with an asterisk are mandatory). a) *Valve type, viz. globe or globe stop and check, and whether straight, angle or oblique Y pattern (see clause1). b) *Class and nominal size (see clauses4 and6 andB.7). c) *If soft seals are required (see clause5 and18.1). d) *Whether flanged or butt-welding ends
36、 are required. 1) If flanged ends are required, whether welded-on flanges are acceptable (see8.5); the type of facing (see8.6). 2) If butt-welding ends are required, the pipe schedule number or wall thickness and outside diameter see8.8 b). e) If shell tappings are required and, if so, the location
37、and the type of thread if other than API Std 5B (see8.9). f) If a particular form of disk or seat is required (see10.1). g) If the yoke is to be fitted with a flange for actuator or gearbox mounting (see clause11). mm (in) mm (in) mm (in) 15 20 25 32 a 40 (;) () (1) (1:) (1;) 50 65 a 80 100 150 (2)
38、(2;) a (3) (4) (6) 200 250 300 350 400 (8) (10) (12) (14) (16) For each valve class the applicable sizes are shown inAppendix A. a These sizes have been retained only for the purpose of replacing existing valves. Their use for new construction in piping systems using BS 1560-2 end flanges should be
39、avoided.BS1873:1975 2 BSI 09-1999 h) Details of type of operation required if other than direct handwheel operated (see clauses12 and16). i) If a lantern ring is to be provided for Class300 to Class2500 valves (see14.4). j) Where a bypass is required, give the full specification of the bypass valve,
40、 piping and connections (see clause17). k) *The shell material (see clause19). l) If a special bonnet gasket is required (seeclause21). m) *The nominal trim material symbol (see30.2). n) If any special stem packing is required, or specify packing design temperature if above400 C (seeclause32). o) Ma
41、terial(s) for bonnet, gland, and yoke bolting if required for operation at process design temperatures below30 C or above480 C, or for other special operating conditions (seeclause33). p) Material requirements for valves in highly corrosive services or environment, or for low temperature service (se
42、eclause37). q) If a lower seat test leakage rate is required for metal seated globe stop valves when used as check valves (seeclause45); r) Requirements for tropical or special packaging (seeclause48). Section 2. Design 8 Body 8.1 For the body the design criteria specified in8.2 to8.10 shall be obse
43、rved. 8.2 The body shall be designed to minimize pressure loss as well as corrosive and erosive effects. The body end ports shall be circular. The area of the flow passage shall everywhere be as near equal to the area of the body end ports as practicable. 8.3 The body wall thickness shall comply wit
44、h the requirements for shell thickness inAppendix A. Drilling of, or pinning to, the wall is not permissible, e.g.for nameplate fixing where this would reduce the effective thickness below the minimum permitted value. 8.4 Face-to-face and centre-to-face dimensions for raised face flanged end valves
45、and end-to-end and centre-to-end dimensions for butt-welding end and ring joint flanged end valves shall conform to the dimensions specified in BS2080. Stop and check valves shall have the same dimensions as globe valves of similar pattern. 8.5 End flanges shall be cast or forged integral with the b
46、ody except that flanges may be attached by welding if so specified in the order. The welds of end flanges attached by butt-welding shall comply with the requirements of BS3351 and shall have any necessary heat treatment as required by BS3351 to ensure that they are suitable for service temperatures
47、down to 30 C. Flange attachment by other welding processes shall be the subject of agreement between the manufacturer and the purchaser. 8.6 End flanges shall comply with the requirements of BS1560-2. End flange facings shall be one of the types shown in Figures 1 and 2 of BS2080. The purchaser shal
48、l specify the type of facing required. Valves generally in accordance with this standard but suitable for use in piping systems with BS4504 flanges shall comply with the requirements ofAppendix B.BS1873:1975 BSI 09-1999 3 NOTEFlat seat type disk can be metal-to-metal without soft seal. Figure 1 Typi
49、cal straight pattern globe valveBS1873:1975 4 BSI 09-1999 Reference Name of part Material reference clause Reference Name of part Material reference clause 1 Body 19 17 Gland, one piece type 29 2 End flange 18 Gland flange 29 3 Body boss 19 Gland follower 29 4 Bonnet flange 20 Stem 30 5 Body bonnet flange 21 Back seat bushing 30 6 Bonnet 19 22 Disk nut 30 7 Seat ring, shoulder seated 20 and30 23 Disk nut, back seat type 30 8 Seat ring, bottom seated 20 and30 24 Lantern ring 31 9 Bonnet gasket 21 25 Stem packing
