BS-EN-13434-2006.pdf
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1、BRITISH STANDARD BS EN 13434:2006 Devices to prevent pollution by backflow of potable water Mechanical disconnector, hydraulic actuated Family G, type B The European Standard EN 13434:2006 has the status of a British Standard ICS 13.060.20; 23.060.50 ? Licensed Copy: London South Bank University, Lo
2、ndon South Bank University, Mon Jul 16 04:05:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 13434:2006 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2007 BSI 2007 ISBN 978 0 580 54009 7 National foreword This British Standard w
3、as published by BSI. It is the UK implementation of EN 13434:2006. The UK participation in its preparation was entrusted by Technical Committee B/504, Water supply, to Subcommittee B/504/4, Backflow prevention. A list of organizations represented on this committee can be obtained on request to its s
4、ecretary. BSI, as a member of CEN, is obliged to publish EN 13434 as a British Standard. However, attention is drawn to the fact that during the development of this European Standard, the UK voted against its approval as a European Standard. The UK committee believes that there are errors in the tes
5、t procedure described in clause 9.5.3.2, Test 3. The required flow rate at stage 1 is adjusted by means of valve 6 which, in the opinion of the UK, should remain open throughout the procedure (along with Valve 4) to maintain the flow rate. The UK committee believe this to be an error which will affe
6、ct the remaining steps of the test sequence. When applying this standard, users are advised to treat test results from this procedure with caution. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance w
7、ith a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Mon Jul 16 04:05:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE
8、EUROPISCHE NORM EN 13434 March 2006 ICS 13.060.20; 23.060.50 English Version Devices to prevent pollution by backflow of potable water - Mechanical disconnector, hydraulic actuated - Family G, type B Dispositifs de protection contre la pollution par retour de leau potable - Disconnecteur mcanique as
9、sist hydrauliquement - Famille G, type B Sicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch Rckflieen - Rohrtrenner, durchflussgesteuert - Familie G, Typ B This European Standard was approved by CEN on 16 December 2005. CEN members are bound to comply with the CEN/CENELEC
10、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
11、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
12、ers are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerlan
13、d and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2006 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1
14、3434:2006: E Licensed Copy: London South Bank University, London South Bank University, Mon Jul 16 04:05:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 13434:2006 (E) 2 Contents Page Foreword 3 Introduction4 1 Scope.5 2 Normative references .5 3 Terms and definitions.6 4 Nominal size7 5 Designatio
15、n .8 6 Symbolization8 7 Physico-chemical characteristics8 7.1 Materials 8 7.2 Nature of the materials .9 8 Design9 8.1 General 9 8.2 Relief valve9 8.3 Disconnection distance10 9 Characteristics and tests10 9.1 General 10 9.2 General tolerances10 9.3 Expression of the results .11 9.4 Dimensional char
16、acteristics.11 9.5 Mechanical characteristics.12 9.6 Leaktightness characteristics15 9.7 Hydraulic characteristics18 10 Order of testing.23 11 Marking and technical documents.24 11.1 General 24 11.2 Marking24 11.3 Technical documents .24 12 Presentation at delivery25 Annex A (informative) Examples o
17、f presentation of test results 26 Bibliography.28 Licensed Copy: London South Bank University, London South Bank University, Mon Jul 16 04:05:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 13434:2006 (E) 3 Foreword This European Standard (EN 13434:2006) has been prepared by Technical Committee CEN
18、/TC 164 “Water supply”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2006, and conflicting national standards shall be with- drawn at the la
19、test by September 2006. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Den- mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
20、Ireland, Italy, Latvia, Lithuania, Luxem- bourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer- land and United Kingdom. Licensed Copy: London South Bank University, London South Bank University, Mon Jul 16 04:05:51 GMT+00:00 2007, Uncontrolled Cop
21、y, (c) BSI EN 13434:2006 (E) 4 Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this European Standard: 1) this European Standard provides no information as to whether the product may be used without re- str
22、iction in any of the Member state of the EU or EFTA; 2) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. Licensed Copy: London South Bank University, Lond
23、on South Bank University, Mon Jul 16 04:05:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 13434:2006 (E) 5 1 Scope This European Standard specifies, the dimensional, the physico-chemical, the design, the hydraulic, the mechanical and the acoustic characteristics of mechanical disconnector, hydraul
24、ic actuated Family G, type B. This European Standard is applicable to mechanical disconnectors hydraulic actuated in nominal sizes DN 8 up to DN 250, intended to prevent the return of water having lost its original sanitary and drinking qualities (called “polluted water“ in this European Standard),
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