《BS-EN-248-1992.pdf》由会员分享，可在线阅读，更多相关《BS-EN-248-1992.pdf（12页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 248:1992 Sanitary taps: General technical specifications for electrodeposited nickel chrome coatings The European Standard EN 248:1989 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:29:38 GMT+00:00 2006, Uncontrolled Copy, (c) BS
2、I BS EN 248:1992 This British Standard, having been prepared under the direction of Technical Committee B/504, was published under the authority of the Standards Board and comes into effect on 1 April 1992 BSI 11-1999 The following BSI references relate to the work on this standard: Committee refere
3、nce B/504/8 Draft for comment 86/11578 DC ISBN 0 580 20562 2 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries. AustriaOesterreichisches No
4、rmungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organization for Standardization IcelandTechnological Institute of Ice
5、land IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus da Qualidade SpainAsociacin Espaola de Normalizac
6、in y Certificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:29:38 GMT+00:00 2006, Uncontrol
7、led Copy, (c) BSI BS EN 248:1992 BSI 11-1999i Contents Page Cooperating organizationsInside front cover National forewordii Brief history2 Foreword2 Text of EN 2483 National annex NA (informative) Committees responsible6 National annex NB (informative) Cross-referencesInside back cover Licensed Copy
8、: sheffieldun sheffieldun, na, Fri Nov 03 09:29:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 248:1992 ii BSI 11-1999 National foreword This British Standard has been prepared under the direction of Technical Committee B/504, Water supply, and is the English language version of EN 248 “Sanitar
9、y taps: General technical specification for electrodeposited nickel chrome coatings”, published by the European Committee for Standardization (CEN). EN 248 was produced as a result of international discussion in which the UK took an active part. The UK voted against this standard at formal vote stag
10、e but the analysis of voting, in accordance with 5.1 of the Common CEN/CENELEC Rules, resulted in a positive vote. In consequence the document was accepted as a European Standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards ar
11、e 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, the EN title page, pages 2 to 6, an inside back cover and a back c
12、over. 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, Fri Nov 03 09:29:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NO
13、RME EUROPENNE EUROPISCHE NORM EN 248 June 1989 UDC 621.646.2:644.6:621.793:620.1 Descriptors: Sanitary valves, metal coatings, nickel coating, chromium slating, inspection, surface condition, corrosion resistance, adhesion English version Sanitary taps: General technical specifications for electrode
14、posited nickel chrome coatings Robinetterie sanitaire: Spcifications gnrales des revtements lectrolytiques de Ni-Cr Sanitrarmaturen: Allgemeine Anforderungen fr elektrolytische NiCr-berzge This European Standard was approved by CEN on 1988-06-20. CEN members are bound to comply with the CEN/CENELEC
15、Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN m
16、ember. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN memb
17、ers are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisch
18、es Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels CEN 1989 Copyright reserved to all CEN members Ref. No. EN 248:1989 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:29:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 248:1989 BSI 11-1999 2 Brief history This
19、 European Standard has been prepared by Technical Committee CEN/TC 34 “Sanitary taps Dimensions, quality”. In the course of CEN work, the members of this committee have long discussed whether it was appropriate to introduce surface appearance characteristics into product standards and more precisely
20、 into prEN 200, certain member bodies regarding them as not of prime importance. Through resolution 249, the majority of CEN/TC 34 members did not deem it necessary to specify such characteristics in prEN 200 but unanimously accepted (Resolution 313) the development of this standard that can be refe
21、rred to for all types of taps (feed and waste). According to the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sw
22、eden, Switzerland and United Kingdom. Foreword This standard complements product standards or draft standards already published currently under study within CEN/TC 34 single taps and mixer taps (EN 200), flow rate regulators (EN 246), thermostatic mixers and waste fittings . in which it is referred
23、to. Taking into account recently marketed coatings, this standard may be revised accordingly. Contents Page Brief history2 Foreword2 1Object3 2Field of application3 3References3 4Definition of significant surfaces3 5State of significant surfaces3 6Defects of significant surfaces3 7Coating quality3 F
24、igure 14 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:29:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 248:1989 BSI 11-19993 1 Object The aim of this European Standard is to: define the state of significant tapware surfaces; specify the characteristics of the surface coating (corrosi
25、on resistance, adhesion); and describe tests for checking these characteristics. 2 Field of application This standard applies to all tapware (feed or waste) having a Ni-Cr metallic coating, regardless of the nature of the support material. Testing procedures for other coatings (golding, colouring) a
26、re to be defined later. 3 References EN 200:1989, Sanitary tapware General technical specifications for single taps and mixer taps (nominal size ) PN 10 Minimum flow pressure of 0,05 MPa (0,5 bar). EN 246:1989, Sanitary tapware General specifications for flow rate regulators. ISO 3768:1976, Metallic
27、 coatings Neutral salt spray test (NSS test). 4 Definition of significant surfaces Significant surfaces are all parts of the article covered or to be covered by the coating and for which the coating is essential for serviceability and/or appearance of the fitted article. For example, internal surfac
28、es of hollow parts such as cross pieces, caps, knobs, are not deemed significant. 5 State of significant surfaces Significant surfaces shall be efficiently protected against corrosion, either owing to the nature of materials used or through adequate coating. 6 Defects of significant surfaces Before
29、testing, significant surfaces shall not show any defect. Surfaces are examined with a naked eye, at a distance of about 300 mm, without any magnifying device. 7 Coating quality 7.1 Corrosion resistance testing neutral salt spray test 7.1.1 Requirement Upon completion of the salt spray test, apparent
30、 surfaces shall not show any defect. 7.1.2 Procedure Carry out the test in the conditions defined in ISO 3768 as follows. Subject the partially dismantled tapware and its accessories to spraying for 200 h, including a rest period of 48 h half-way through the treatment, that is after the first 100 h
31、of spraying. Maintain the heating of the cabinet during the rest period. Throughout testing, the cabinet shall only be opened to check and maintain the installation, the maximum spraying deadtime being 30 min a day. Heating shall not be interrupted, test pieces shall never be handled, washed or chec
32、ked. After treatment and before visual examination, rinse the test pieces in water to remove all traces of salt. After testing, surfaces are examined with the naked eye, at a distance of about 300 mm, without any magnifying device. 7.2 Coating adherence test sectioning test 7.2.1 Requirement After t
33、esting has been carried out at three different places, there shall be neither peeling nor separation of coating. 7.2.2 Procedure At a point of the coated surface, a grid of about 15 mm 15 mm is scribed with a tungsten carbide tipped sharp tool (see Figure 1). Gridding shall be performed by pulling t
34、he scribe handle parallel to the surface. Marks shall be about 3 mm apart and of such a depth that this operation completely cuts the electrolytic coating, without crimping it onto the base metal. The test is repeated at three different places. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03
35、09:29:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 248:1989 4 BSI 11-1999 Figure 1 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:29:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 5blank Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:29:38 GMT+00:00 2006, Uncontrolled Copy,
36、(c) BSI BS EN 248:1992 6 BSI 11-1999 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by Technical Committee B/504 Water supply to Subcommittee B/504/8 Terminal fittings, upon which the following bodies
37、 were represented: Association of Consulting Engineers Association of Manufacturers of Domestic Unvented Supply Systems Equipment (MODUSSE) British Bathroom Council British Foundry Association British Non-ferrous Metals Federation British Plastics Federation British Plumbing Fittings Manufacturers A
38、ssociation Department of the Environment (Drinking Water Inspectorate) Department of the Environment (Property Services Agency) Fibre Cement Manufacturers Association Limited Institute of Plumbing Institution of Water and Environmental Management Scottish Association of Directors of Water and Sewera
39、ge Services Water Byelaws Advisory Service Water Companies Association Water Services Association of England and Wales The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Association of Manufacturers of Domestic Electrical Appliances Associat
40、ion of Water Officers Ltd. British Gas Plc British Valve and Actuator Manufacturers Association Builders Merchants Federation Consumer Policy Committee of BSI Department of the Environment (Building Research Establishment) Department of Trade and Industry (National Weights and Measures Laboratory) I
41、nstitute of Clerks of Works of Great Britain Inc. Institution of Gas Engineers Metal Sink Manufacturers Association National Association of Plumbing, Heating and Mechanical Services Contractors Royal Institute of British Architects Society of British Gas Industries Society of British Water Industrie
42、s South London Consortium Water Research Centre Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:29:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 248:1992 BSI 11-1999 National annex NB (informative) Cross-references Publications referred toCorresponding British Standard EN 200:1989BS
43、EN 200:1992 Sanitary tapware: general technical specifications for single taps and mixer taps (nominal size ) PN 10: minimum flow pressure of 0.05 MPa (0.5 bar) EN 246:1989BS EN 246:1992 Sanitary tapware: general specifications for flow rate regulators ISO 3768:1976BS 5466 Methods for corrosion test
44、ing of metallic coatings Part 1:1977 Neutral salt spray test (NSS test) Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:29:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 248:1992 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national
45、 body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the l
46、atest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of whic
47、h can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standa
48、rds publications should be addressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested. Information on s
49、tandards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel: 020 8996 7111. Fax: 020 8996 7048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other