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1、BRITISH STANDARD BS 5388:1976 Specification for Spray taps UDC 621.646.6:628.156:696.117 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:22:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5388:1976 This British Standard, having been prepared under the direction of the Sanitary Appliances
2、Standards Committee, was published under the authority of the Executive Board on 30 September 1976 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference SAB/2 Draft for comment 74/0492 DC ISBN 0 580 09186 4 Cooperating organizations The Sanitary Appliances
3、 Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: British Bath Manufacturers Association* British Plastics Federation* Council of British Ceramic Sanitar
4、yware Manufacturers* Department of the Environment* Environmental Health Officers Association Greater London Council* Institute of Plumbing* Institution of Heating and Ventilating Engineers* Institution of Municipal Engineers* Institution of Public Health Engineers Metal Sink Manufacturers Associati
5、on Ministry of Defence National Brassfoundry Association* National Federation of Builders and Plumbers Merchants* National Water Council* Royal Institute of British Architects Royal Institute of Public Health and Hygiene Royal Society of Health* Water Companies Association* The Government department
6、 and scientific and industrial 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 Manufacturers of Domestic Electrical Appliances British Gas Corporat
7、ion British Non-Ferrous Metals Technology Centre British Valve Manufacturers Association Copper Ball Manufacturers Association Copper Development Association Copper Tube Fittings Manufacturers Association Department of the Environment (Building Research Establishment) Department of Prices and Consum
8、er Protection Heating and Ventilating Contractors Association Institute of British Foundrymen Institute of Gas Engineers Institution of Production Engineers Institution of Water Engineers and Scientists National Association of Plumbing, Heating and Mechanical Services Contractors Society of British
9、Gas Industries South London Consortium Thames Water Authority Metropolitan Water Division Individual experts Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:22:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5388:1976 BSI 1
10、2-1999i Contents Page Cooperating organizationsInside front cover Forewordii Section 1. General 1Scope1 2References1 3Definitions1 4Nominal size1 5Marking1 Section 2. Dimensions, design and construction 6General1 7Dimensions1 8Materials1 9Spray outlet2 10Flow restrictor2 Section 3. Testing 11General
11、3 12Rate of flow test3 13Test for divergence of the spray3 Appendix A Information to be supplied by the purchaser6 Appendix B Method of measuring the rate of flow through spray taps fitted with a fixed flow restrictor6 Appendix C Method of measuring the rate of flow through spray taps fitted with an
12、 adjustable or self adjusting flow restrictor6 Appendix D Method of measuring the divergence of the spray7 Appendix E Design considerations for wash basins and troughs fitted with spray taps7 Appendix F Notes on the installation of spray taps7 Figure 1 Installation and dimensional features of pillar
13、 spray taps2 Figure 2 Installation and dimensional features of bib spray taps2 Figure 3 Diagram of rate of flow test apparatus3 Figure 4 Details of pressure take-off tee4 Figure 5 Sectional diagram of spray, spray outlet and annular gauge5 Table 1 Working pressure ranges and test pressures for fixed
14、 flow restrictors2 Table 2 Dimensions of pressure take-off tee4 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:22:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5388:1976 ii BSI 12-1999 Foreword This British Standard has been prepared under the
15、authority of the Sanitary Appliances Standards Committee and at the request of the Department of the Environment and The Building Research Establishment. Spray taps provide a quick, hygienic method of washing under running water. The use of spray taps appreciably reduces the total amount of water us
16、ed for handwashing. Spray “mixing” taps, which incorporate a mixing function operated by the user, are not specified in this standard, but it is intended to prepare a separate British Standard dealing with them. They possess characteristics similar to those of spray taps but they are also able to ac
17、cept hot and cold water supplies and mix them for delivery at a temperature to suit the user. The factors governing the use of spray taps, and their associated plumbing systems, are numerous. Pending the inclusion of a statement on design considerations in the relevant British Standard codes of prac
18、tice, and the issue of British Standard specifications for special wash basins and troughs for spray taps, Appendix E and Appendix F to this present standard set out some basic considerations. A British Standard does not purport to include all the necessary provisions of a contract. Users of British
19、 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 front cover, pages i and ii, pages 1 to 8, an inside back cover and a back cover.
20、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. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:22:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5388:1976 BSI 12-19991
21、Section 1. General 1 Scope This British Standard specifies requirements for the materials, design, construction, dimensions and testing of two forms of spray taps: pillar spray taps and bib spray taps. 2 References The titles of the publications referred to in this standard are listed on the inside
22、back cover. 3 Definitions For the purposes of this British Standard the following definitions apply. Reference should be made to BS 4118, (from which definitions 3.1 and 3.2 are taken) for other definitions. 3.1 spray tap a tap supplied with water at a predetermined temperature which it delivers, at
23、 a restricted rate of flow, in the form of a spray NOTEA bib spray tap is supplied with water through a horizontal inlet and a pillar spray tap is supplied with water through a vertical inlet. 3.2 dead-leg a length of hot water pipe leading to a draw-off point and not forming part of a circuit 3.3 f
24、low restrictor that component of a spray tap, not being the spray outlet, which governs or restricts the rate of discharge 3.4 spray outlet a fitting that is attached to the outlet of a tap and causes water passing through it to break up into a spray 3.5 tap platform a flat horizontal part of a wash
25、 basin provided for the mounting of a tap 4 Nominal size The nominal size of spray taps with both rising and non-rising spindles shall be “ nominal size. 5 Marking 5.1 Spray taps. Spray taps shall be legibly and permanently marked with the following information: a) the manufacturers name or mark; b)
26、 the number of this British Standard, i.e. BS 5388. Additional markings are not precluded (e.g. BS 1010-1 or BS 1010-2 or performance standards, when published (see clause 6). 5.2 Non-adjustable flow restrictors. Non-adjustable flow restrictors shall be legibly marked with the flow restrictor number
27、 (see Table 1). Section 2. Dimensions, design and construction 6 General The design and construction of spray taps shall be as specified in BS 1010-1 or BS 1010-2 or in BS 5412, BS 5413-1 and BS 5413-3 (in course of preparation) except for those features specified in section 2 of this standard. 7 Di
28、mensions 7.1 Pillar spray taps. Pillar spray taps shall have the dimensional features shown in Figure 1. 7.2 Bib spray taps. Bib spray taps shall have the dimensional features shown in Figure 2. 8 Materials 8.1 General. Component parts of spray taps, other than those specified in 8.2 and 8.3, shall
29、be made of any of the materials specified in BS 1010-2 for comparable parts. The materials used in the construction of spray taps and which are in contact with the supply water shall not constitute a toxic hazard and shall not foster microbiological growth or give rise to taste, odour, cloudiness or
30、 discoloration of the water. Attention is drawn to National Water Council requirements in this respect. 8.2 Spray outlets. Spray outlets shall be made of one or more of the following materials: a) one of the non-ferrous metals specified in BS 1010-2; b) stainless steel as specified in BS 970-4, grad
31、es 302 S25, 304 S15, 303 S21; c) acetal, polypropylene, high density polyethylene, acrylonitrile butadiene styrene (ABS), polytetrafluoroethylene (PTFE) or not less suitable material. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:22:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5388:1
32、976 2 BSI 12-1999 8.3 Flow restrictors. Flow restrictors shall be made of one of the materials, or a combination of the materials, specified in a) and b) of 8.2, or of rubber as specified in clause 6 of BS 3457:1973. 9 Spray outlet The spray tap shall be provided with a spray outlet capable of causi
33、ng the water to assume the shape of a diverging spray. The cone shall not diverge to an extent greater than that shown in Figure 5 when the tap is fully opened. Every waterway in the outlet shall be capable of accepting a 1 mm nominal diameter steel probe and the steel shall comply with the requirem
34、ents of BS 1407. The spray outlet device shall be capable of being removed for cleaning but only by the use of a special tool. 10 Flow restrictor A flow restrictor shall be provided in the spray tap. The flow restrictor may be either adjustable or one of the three fixed flow types, the pressure limi
35、ts for which are specified in Table 1. Self adjusting flow restrictors may also be used provided that not more than two patterns are required to satisfy the requirements of 12.2 over the whole range of working pressures set out in Table 1. The flow restrictor shall be in a form so that it can be adj
36、usted or changed without removing the tap from the wash basin, but cannot be so adjusted without the use of a special tool. Table 1 Working pressure ranges and test pressures for fixed flow restrictors BS flow restrictor number Working pressure range Test flow pressure min.max. barabar 10.270.600.40
37、 20.601.350.90 31.353.002.00 a 1 bar = 105 N/m2 = 100 kPa. NOTE 1Drawing is diagrammatic only. NOTE 2Dimensions in “box” are given for guidance only. Figure 1 Installation and dimensional features of pillar spray taps NOTE 1Drawing is diagrammatic only. NOTE 2Dimensions in “box” are given for guidan
38、ce only. Figure 2 Installation and dimensional features of bib spray taps Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:22:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5388:1976 BSI 12-19993 Section 3. Testing 11 General Spray taps shall be capable of passing the tests specified in 1
39、.7.1 of BS 1010-2:1973. In addition they shall be capable of meeting the test requirements specified in section 3 of this standard. 12 Rate of flow test 12.1 Spray taps with fixed flow restrictors. When tested by the method specified in Appendix B, spray taps with fixed flow restrictors shall delive
40、r water at a rate of not less than 0.03 litre/s and not more than 0.05 litre/s when the spray tap is opened through 180 from the commencement of flow. When the spray tap is fully open the flow shall not increase by more than 10 % from the flow obtained at 180 of opening. 12.2 Spray taps with adjusta
41、ble flow restrictors. When tested by the method specified in Appendix C, spray taps fitted with adjustable flow restrictors shall, when the restrictor is suitably adjusted and when the spray tap is opened through 180 from the commencement of flow, deliver water at a rate of not less than 0.03 litre/
42、s and not more than 0.05 litre/s. When the spray tap is fully open, the flow shall not increase by more than 10 % from the flow obtained at 180 of opening. 13 Test for divergence of the spray When tested by the method specified in Appendix D, for flow rates of 0.03 litre/s and 0.05 litre/s, spray ta
43、ps shall produce a spray of water the whole of which shall enter the gauge, as follows (see Figure 5). a) No water shall enter the outer annulus. b) Not less than 10 % and not more than 90 % shall enter the inner annulus. c) The remainder shall enter the centre cylinder. The inner annulus is evenly
44、divided into four sections each with its own separate take-off point. Each of the four inner annulus take-off points shall collect between 15 % and 30 % of the water flowing into the inner annulus. NOTEDrawing is diagrammatic only. Figure 3 Diagram of rate of flow test apparatus Licensed Copy: sheff
45、ieldun sheffieldun, na, Mon Dec 04 16:22:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5388:1976 4 BSI 12-1999 Table 2 Dimensions of pressure take-off tee NOTEDrawing is diagrammatic only Figure 4 Details of pressure take-off tee SizeABCDEFGHJKL “153112.733552712.5G!430.521 NOTEAll dimensions are
46、 in millimetres. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:22:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5388:1976 BSI 12-19995 NOTE 1Walls of annular gauge to be not more than 1 mm thick. NOTE 2Drawing is diagrammatic only. Figure 5 Sectional diagram of spray, spray outlet and
47、 annular gauge Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:22:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5388:1976 6 BSI 12-1999 Appendix A Information to be supplied by the purchaser The purchaser shall supply the following information when making an enquiry or placing an order:
48、 a) the nominal size of the spray tap, i.e. “ nominal size; b) whether a bib type mounting or a pillar type mounting is required; c) whether a rising or non-rising spindle is required; d) the working pressure (bar) to which the spray tap will be subjected (see Table 1); e) the type of flow restricto
49、r. Appendix B Method of measuring the rate of flow through spray taps fitted with a fixed flow restrictor B.1 Object The object of the test is to determine whether or not the specimen spray tap will deliver water at the specified rates. B.2 Apparatus The following are required. B.2.1 A water supply having a minimum pressure of 4.50 bar and a minimum rate of flow, when the supply pipe is open to atmosphere, of 0.10 litre/s. B.2.2 A stopvalve B.2.3 A pressure regulator capable of reducing the supply pressure to the test pressures requi
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