BS 5157-1989 Steel gate (parallel slide) valves
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ID： |
0FF38431A78043AB8C98BB4CBDC7AACA |
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文件大小(MB)： |
0.39 |
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页数： |
26 |
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文件格式： |
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日期： |
2009-1-19 |
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购买： |
文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
BRITISH STANDARD BS 5157:1989,Specification for,Steel gate,(parallel slide) valves,UDC 621.646.5:669.14:001.4:620.1,BS 5157:1989,This British Standard, having,been prepared under,the direction of the,Piping Systems Components,Standards Committee,was published under,the authority of the Board of,BSI and comes,into effect on,31 July 1989,. BSI 04-1999,First published December 1974,First revision July 1989,The following BSI references,relate to the work on this,standard:,Committee reference PSE/7,Draft for comment 87/72143 DC,ISBN 0 580 17297 X,Committees responsible for this,British Standard,The preparation of this British Standard was entrusted by the Piping Systems,Components Standards Committee (PSE/-) to Technical Committee 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 Compressed Gases Association,British Foundry Association,British Gas plc,British Maritime Technology,British Shipbuilders,British Valve and Actuator Manufacturers Association Ltd.,Chartered Institution of Building Services Engineers,Copper Development Association,Copper Tube Fittings Manufacturers’ 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 Chemical Engineers,Institution of Gas Engineers,Institution of Mechanical Engineers,Institution of Water and Environmental Management (IWEM),Society of British Gas Industries,Steel Casting Research and Trade Association,Water Authorities’ Association,Water Companies’ Association,The following body was also represented in the drafting of the standard,through sub-committees:,Combustion Engineering Association,Amendments issued since publication,Amd. No. Date of issue Comments,BS 5157:1989,. BSI 04-1999 i,Contents,Page,Committees responsible Inside front cover,Foreword iii,Section 1. General,1.1 Scope 1,1.2 Definitions 1,1.3 Valve patterns 1,1.4 Size ranges 1,1.5 Nominal pressure (PN) and Class designation 1,1.6 Pressure/temperature ratings 2,Section 2. Body ends,2.1 Flanged body ends 4,2.2 Butt-weld body ends 4,Section 3. Design,3.1 Bodies 6,3.2 By-pass 6,3.3 Body to bonnet connection 6,3.4 Stems 6,3.5 Operation 6,3.6 Bolting 6,3.7 Seats 6,3.8 Disks 7,3.9 Stem glands 7,3.10 Yokes 7,3.11 End connections 7,Section 4. Materials,4.1 Pressure containing shell 8,4.2 Disks and body seats 8,4.3 Facings for disk, body seat and body 8,4.4 Stems 8,4.5 Stem glands, body seals and gaskets 8,4.6 Bolting 8,4.7 Handwheel 8,Section 5. Testing,5.1 Production pressure testing 9,5.2 Test certificate 9,5.3 Manufacturer’s certificate 9,Section 6. Marking,6.1 General 10,6.2 Body markings 10,6.3 Identification plate markings 10,6.4 Material symbols 10,6.5 Omission of markings 10,Section 7. Preparation for storage and transportation,7.1 General 11,7.2 Body ends 11,7.3 Disk position 11,BS 5157:1989,ii . BSI 04-1999,Page,Appendix A Information to be supplied by purchaser 12,Appendix B Weld-end preparations 13,Appendix C Approximate diameters of body end ports 14,Appendix D Typical steel gate (parallel slide) valves 15,Figure 1 — Weld-end preparation 13,Figure 2 — Venturi pattern with eyelet 15,Figure 3 — Full bore pattern without eyelet 16,Figure 4 — Pressure seal and bolted bonnet assemblies 17,Table 1 — Pressure/temperature ratings for Special Class butt-weld,end valves: material carbon steel 2,Table 2 — Pressure/temperature ratings for Special Class butt-weld,end valves: material carbon molybdenum steel 2,Table 3 — Pressure/temperature ratings for Special Class butt-weld,end valves: material 1 % chromium ?% molybdenum steel,and 1?% chromium?% molybdenum steel 2,Table 4 — Pressure/temperature ratings for Special Class butt-weld,end valves: material 2?% chromium 1 % molybdenum steel 3,Table 5 — Face-to-face dimensions and tolerances for flanged end,valves with raised faces 4,Table 6 — End-to-end dimensions and tolerances for valves with,body ends flanged to BS 1560-3.1 having ring-joint faces 5,Table 7 — End-to-end dimensions and tolerances for butt-weld,end valves 5,Table 8 — Drain tapping sizes 6,Table 9 — Materials for body, bonnet and stuffing box 8,Table 10 — Test durations 9,Table 11 — Trim material identification symbols 10,Table 12 — Weld-end preparation 13,Table 13 — Approximate diameters of body end p……
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