1、BRITISH STANDARD BS3818:1964 Specification for Self-sealing fuelling couplings for diesel locomotives and diesel railcarsBS3818:1964 This BritishStandard, having been approved by the MechanicalEngineering IndustryStandards Committee and endorsed by the Chairman ofthe Engineering Divisional Council,
2、was published under theauthority of the General Council on 30November1964 BSI12-1999 The following BSI references relate to the work on this standard: Committee referenceMEE/96/5 Draft for commentD62/6127 ISBN 0 580 35995 6 Co-operating organizations The Mechanical Engineering Industry Standards Com
3、mittee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Associated Offices Technical Committee Institute of Marine Engineers Association of Consulting Engineers Institute of
4、 Petroleum Association of Mining Electrical and Institution of Civil Engineers Mechanical Engineers* Institution of Gas Engineers British Chemical Plant Manufacturers Institution of Heating and Ventilating Association Engineers British Compressed Air Society* Institution of Mechanical Engineers* Bri
5、tish Electrical and Allied Manufacturers Institution of Mechanical Engineers Association (Automobile Division) British Gear Manufacturers Association Institution of Production Engineers British Internal Combustion Engine Locomotive and Allied Manufacturers Manufacturers Association Association of Gr
6、eat Britain British Iron and Steel Federation* London Transport Board British Mechanical Engineering Machine Tool Trades Association Federation* Ministry of Defence, Army Department British Railways Board* Ministry of Defence, Navy Department* Crown Agents for Oversea Governments and Ministry of Lab
7、our (H.M. Factory Administrations* Inspectorate) D.S.I.R. National Engineering Laboratory Ministry of Power* Electricity Council, the Generating Board Ministry of Public Building and Works* and the Area Boards in England and Ministry of Transport* Wales National Coal Board* Engineering Equipment Use
8、rs Association National Physical Laboratory (D.S.I.R.) Gas Council Radio Industry Council High Commission of India Royal Institute of British Architects The Government departments and scientific and industrial organizations marked with an asterisk in the above list, together with the following were
9、directly represented on the committee entrusted with the preparation of this standard: Association of British Railway Carriage and Federation of Manufacturers of Construction Wagon Manufacturers Equipment British Hose Manufacturers Association Federation of Painting Contractors Council of British Ma
10、nufacturers of Institution of Municipal Engineers Petroleum Equipment Institution of Water Engineers Federation of British Rubber and Allied Ministry of Aviation Manufacturers Oil Companies Materials Association Federation of Civil Engineering Contractors Individual manufacturers Amendments issued s
11、ince publication Amd. No. Date CommentsBS3818:1964 BSI 12-1999 i Contents Page Co-operating organizations Inside front cover Foreword ii 1 Scope 1 2 General functional requirements for couplings 1 3 Hose half coupling 1 4 Fixed half coupling 1 5 Blanking cap for fixed half coupling 1 6 Dust cap 1 7
12、Workmanship 1 8 Materials 2 9 Hydrostatic test 2 10 Identification marking 2 11 Test facilities 2 Appendix A 8 Figure 1 Engaged coupling 3 Figure 2 Hose half coupling(1 in) 4 Figure 3 Fixed half coupling(1 in) 5 Figure 4 Hose half coupling(2 in) 6 Figure 5 Fixed half coupling(2 in) 7BS3818:1964 ii B
13、SI 12-1999 Foreword This standard makes reference to the following BritishStandards: BS21, Pipe threads. BS84, Parallel screw threads of Whitworth form. BS2464, Hose couplings for petrol, oil and lubricants(in to4in nominal size). This British Standard, which has been prepared under the authority of
14、 the Mechanical Engineering Industry Standards Committee, forms one of a series now under preparation for railway rolling stock components. The object of this standard is to lay down the leading dimensions for self-sealing fuelling couplings for diesel locomotives and diesel railcars. It was origina
15、lly intended that BS2464 1)should be used for this purpose, but there is strong need for a BritishStandard tank-filling coupling specially designed so that a quick and fool-proof joint can be made and that the connection will not be broken by any inadvertent movement of vehicle or hose and no spilla
16、ge is possible from tank or hose directly the connection is uncoupled. NOTE 1Where metric equivalents are given, the figures in British units are to be regarded as standard. The metric conversions are approximate. More accurate conversions should be based on the tables in BS350, “Conversion factors
17、and tables”. NOTE 2In place of the customary, but incorrect, use of the pound as a unit of force, the unit called a pound-force (abbreviationlbf) has been used in this standard. It is that force which, when acting on a body of mass one pound, gives it an acceleration equal to that of standard gravit
18、y. A British Standard does 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 compris
19、es a front cover, an inside front cover, pagesi andii, pages1 to8, 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 the inside front cover. 1) BS2464, “Hose couplings
20、for petrol, oil and lubricants”.BS3818:1964 BSI 12-1999 1 1 Scope This BritishStandard specifies the leading dimensions for1 in and2 in nominal bore screw-engagement self-sealing fuelling couplings for diesel locomotives and diesel railcars, for use at a pressure not exceeding100lbf/in 2 , detailed
21、as follows: a) Hose half coupling. b) Fixed half coupling for mounting on vehicle. c) Blanking cap for fixed half coupling to keep the sealing faces clean and arrest leakage (optional). d) Dust cap for hose half coupling (optional). 2 General functional requirements for couplings The operation of th
22、e coupling in the engaged condition is shown in Figure 1. a) The couplings shall be suitable for operation over a temperature range of10 F to150F(12.2 C to+65.6 C). b) The1 in coupling shall pass100gal/min of oil at0.833sp.gr. and4.35centistokes viscosity 2)without exceeding a pressure drop across t
23、he coupling of10lbf/in 2 . c) The2 in coupling shall pass250gal/min of oil at0.833sp.gr. and4.35centistokes viscosity 2)without exceeding a pressure drop across the coupling of10lbf/in 2 . d) Couplings shall be connected and disconnected without exceeding a maximum spillage of3cm 3for1 in coupling a
24、nd5cm 3for2 in coupling. e) The coupling shall be robust and suitably designed for rough handling. f) The construction of the coupling shall be such that the action of connecting or disconnecting does not rotate the hose. g) The total force required to connect or disconnect under a line pressure of2
25、5lbf/in 2shall not exceed50lbf(22.7kgf) tangentially applied to the hand wheel rim. h) Each hose half coupling shall connect with any fixed half coupling of the same nominal bore and type. j) There shall be no leakage when the coupling is in use. 3 Hose half coupling The hose half coupling (normally
26、 attached to a flexible hose) shall engage correctly with the fixed half coupling described in Clause4 without the use of a spanner or special tool and for this purpose shall be provided with a hand wheel. The hose half coupling shall contain a valve which is unseated by the connection with the fixe
27、d coupling and reseated on disconnection to seal without leakage. The leading dimensions shall be as shown in Figure 2 and Figure 4. 4 Fixed half coupling The fixed half coupling (normally mounted on the vehicle) shall engage correctly with the hose half coupling described in Clause3. The coupling s
28、hall contain a valve which is unseated by connection with the hose half coupling and reseated on disconnection to seal without leakage. The leading dimensions shall be as shown in Figure 3 and Figure 5. 5 Blanking cap for fixed half coupling The blanking cap shall engage with the fixed coupling with
29、out the use of special tools or spanners in such a way as to form an additional seal against a pressure of5lbf/in 2and shall not disengage due to vibration or motion of the vehicle. In order to prevent loss, the blanking cap shall be provided with chain of0.128in diameter(10SWG) or equivalent means
30、of attaching it to the vehicle. The blanking cap shall be within the envelope dimensions shown in Figure 3 and Figure 5. 6 Dust cap The dust cap shall engage with the hose half coupling without the use of special tools or spanners and in such a way as to form a seal against dust. In order to prevent
31、 loss, the dust cap shall be provided with a chain of0.128in diameter(10SWG) or equivalent means of attaching it to the base. 7 Workmanship Workmanship shall be of good quality. All burrs and sharp edges shall be removed and all cast surfaces shall be smooth. 2) Average figures for gas oil at60F(15.
32、6 C).BS3818:1964 2 BSI 12-1999 8 Materials All parts of the coupling shall be resistant to any corrosive effect of the fuel and atmospheric conditions and to wear caused by the operation of the coupling. Cast iron shall not be used. 9 Hydrostatic test Each half coupling shall be subjected to the fol
33、lowing tests using a fluid with a viscosity not exceeding2centistokes. a) An internal pressure of200lbf/in 2shall be held for one minute without failure or leakage. b) It shall be stood on end with its mating face downwards and filled with the test fluid. It shall not show any leakage for30minutes.
34、c) When connected to a mating half coupling it shall withstand internal pressures of20lbf/in 2and200lbf/in 2for one minute at each pressure without failure or leakage. 10 Identification marking Each half coupling shall be marked with the manufacturers name or initials and the No. of this BritishStan
35、dard, i.e.BS3818 3) 11 Test facilities The manufacturer shall supply, at his own cost, labour and appliances for making the hydrostatic tests on his premises. Failing the existence of facilities for making the prescribed tests at his own works the manufacturer shall be responsible for having the tes
36、ts made elsewhere. 3) NOTEThe mark BS3818 on or in relation to the product is a claim by the manufacturer that it complies with the requirements of the standard. The BritishStandardsInstitution is the owner of the registered certification trade mark. This is shown below enclosed in the words “Approv
37、ed to BritishStandard”. This mark can be used only by manufacturers licensed under the certification mark scheme operated by the BSI. The presence of this mark on or in relation to a product is an assurance that the goods have been produced to comply with the requirements of the BritishStandard unde
38、r a system of supervision, control and testing operated during manufacture and including periodical inspection at the manufacturers works in accordance with the certification mark scheme of the BSI. Further particulars of the terms of licence may be obtained from the Director, BritishStandardsInstit
39、ution,2ParkStreet, London,W.1.BS3818:1964 BSI 12-1999 3 Figure 1 Engaged couplingBS 3818:1964 4 BSI 12-1999 * Thread to BS 21, “Pipe threads”. Thread to BS 84, “Parallel screw threads of Whitworth form”. General tolerance 0.010 unless otherwise stated. All dimensions in inches. Figure 2 Hose half co
40、upling(1 in)BS 3818:1964 BSI 12-1999 5 * Thread to BS 84, “Parallel screw threads of Whitworth form”. General tolerance 0.010 unless otherwise stated. All dimensions in inches. Figure 3 Fixed half coupling(1 in)BS 3818:1964 6 BSI 12-1999 * Thread to BS 21, “Pipe threads”. Thread to BS 84, “Parallel
41、screw threads of Whitworth form”. General tolerance 0.010 unless otherwise stated. All dimensions in inches. Figure 4 Hose half coupling(2 in)BS 3818:1964 BSI 12-1999 7 * Thread to BS 84, “Parallel screw threads of Whitworth form”. General tolerance 0.010 unless otherwise stated. All dimensions in i
42、nches. Figure 5 Fixed half coupling(2 in)BS3818:1964 8 BSI 12-1999 Appendix A Approximate metric equivalents for the figures given in this standard are given below for information. in mm in mm in mm 0.010 0.020 0.030 0.200 0.250 0.261 0.335 0.370 0.375 0.385 0.430 0.435 0.437 0.450 0.490 0.500 0.550
43、 0.562 0.600 0.625 0.687 0.25 0.51 0.76 5.08 6.35 6.63 8.51 9.40 9.52 9.78 10.92 11.05 11.10 11.43 12.45 12.70 13.97 14.27 15.24 15.88 17.45 1.20 1.35 1.50 1.80 1.83 1.98 1.99 2.00 2.20 2.34 2.375 2.400 2.403 2.45 2.50 2.90 2.95 2.99 3.02 3.025 3.03 30.48 34.29 38.10 45.72 45.80 50.39 50.77 50.80 55
44、.88 59.44 60.32 60.96 61.04 61.09 63.50 73.66 74.93 76.17 76.71 76.84 76.96 3.875 4.40 4.405 4.50 4.62 4.75 4.88 5.00 5.25 5.40 5.50 6.00 6.10 6.50 6.55 7.0 7.5 8.9 98.42 111.76 111.89 114.30 117.35 120.65 123.95 127.00 133.35 137.16 139.70 152.40 154.94 165.10 166.37 177.80 190.50 225.06 lbf/in 2 k
45、gf/cm 2 0.733 0.750 0.875 0.918 0.955 1.000 1.025 1.18 1.19 18.62 19.05 22.22 23.32 24.26 25.40 26.04 29.97 30.22 3.04 3.15 3) 3.48 3.50 3.503 3.62 3.68 3.750 77.22 80.01 85.72 88.39 88.90 89.66 91.95 93.47 95.25 5 10 15 20 25 100 200 0.35 0.70 1.05 1.40 1.75 7.03 14.06BS3818:1964 BSI 12-1999 Britis
46、hStandards The following are available on application: YEARBOOK Including subject index and numerical list of BritishStandards15s. SECTIONAL LISTS. Gratis Acoustics Aircraft materials and components Building materials and components Chemical engineering Chemicals, fats, oils, scientific apparatus,et
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49、s and colours for paints Personal safety equipment Petroleum industry Plastics Printing, paper and stationery Road engineering Rubber Shipbuilding Textiles and clothing WeldingBS3818:1964 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or
