BS EN 13959-2004 Anti-pollution check valves - —N 6 to —N 250 inclusive Family E, type A, B, C, and — .pdf
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1、BRITISH STANDARD BS EN 13959:2004 Incorporating corrigendum October 2008 Anti-pollution check valves DN 6 to DN 250 inclusive Family E, type A, B, C and D ICS 23.060.50 ? Licensed Copy: :FULLNAME, : DATE, Uncontrolled Copy, (c) BSI BS EN 13959:2004 This British Standard was published under the autho
2、rity of the Standards Policy and Strategy Committee on 31 October 2006 BSI 2008 ISBN 978 0 580 63069 9 National foreword This British Standard is the UK implementation of EN 13959:2004. It supersedes BS 6282-1:1982 which is withdrawn. The UK participation in its preparation was entrusted by Technica
3、l Committee B/504, Water supply, to Subcommittee B/504/14, Backflow prevention. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Attention is drawn to errors in Figures 10 and 11, in which all the clause references 11.8 should read 11.9. This publ
4、ication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments 3 20080 NovemberAddition of
5、 supersession details to national foreword Licensed Copy: :FULLNAME, : DATE, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13959 October 2004 ICS 23.060.50 English version Anti-pollution check valves - DN 6 to DN 250 inclusive family E, type A, B, C and D Clapets de
6、 non retour antipollution DN 6 DN 250 - Famille E, Type A, B, C et D Rckflussverhinderer - DN 6 bis DN 250 - Familie E, Typ A, B, C und D This European Standard was approved by CEN on 22 July 2004. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditio
7、ns 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 member. This European Standard exists in three off
8、icial 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 members are the national standards bodies of Austria,
9、 Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATI
10、ON COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13959:2004: E Licensed Copy: :FULLNAME, : DATE, Uncontrolle
11、d Copy, (c) BSI EN 13959:2004 (E) 2 Contents page Foreword 3 Introduction4 1 Scope.5 2 Normative references .6 3 Terms and definitions.7 3.1 Anti-pollution check valves7 3.2 Flanged anti-pollution check valves; class a and class b .7 3.3 Combined product8 4 Nominal size8 5 Designation .8 6 Marking a
12、nd technical documents.9 6.1 Marking9 6.2 Technical documents .9 7 Symbolization10 8 General design characteristics10 8.1 Overall length and diameters of check valves10 8.2 End connections.12 8.3 Test and drain ports12 8.4 Other characteristics 13 9 Physio-chemical characteristics14 9.1 Materials 14
13、 9.2 Nature of materials14 10 Test Arrangements .15 10.1 Sequence of testing15 10.2 Apparatus16 11 Hydraulic and mechanical characteristics17 11.1 High velocity (stage 1)17 11.2 Flow rate/pressure loss (stage 2) 18 11.3 Mechanical strength of the body (stage 3)19 11.4 Bending moment (stage 4).20 11.
14、5 Pressure tightness under a low reverse pressure differential (stage 5).22 11.6 Pressure tightness under a high reverse pressure and verification that the check valve has not jammed (stage 6).24 11.7 Pressure differential at which the check valve closes (stage 7) .25 11.8 Compatibility with product
15、s used for disinfection of networks (stage 8).25 11.9 Endurance (stage 9)26 11.10 Pressure tightness under a low reverse pressure differential (stage 10).28 11.11 Pressure tightness under a high reverse pressure and verification that the check valve has not jammed (stage 11).28 11.12 Pressure differ
16、ential at which the check valve closes (stage 12) .28 12 General working characteristics29 12.1 Resistance to corrosion .29 12.2 Acoustic characteristics.29 13 Presentation at delivery30 Annex A (informative) Numbers of test devices/tests 31 BS EN 13959:2004 Licensed Copy: :FULLNAME, : DATE, Uncontr
17、olled Copy, (c) BSI ? EN 13959:2004 (E) 3 Foreword This document (EN 13959:2004) has been prepared by Technical Committee CEN/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 identic
18、al text or by endorsement, at the latest by April 2005, and conflicting national standards shall be withdrawn at the latest by April 2005. This standard has been worked out in reference EN 1717, Protection against pollution of potable water in wa- ter installations and general requirements of device
19、s to prevent pollution by backflow. 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, Hungar
20、y, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem- bourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 13959:2004 Licensed Copy: :FULLNAME, : DATE, Uncontrolled Copy, (c) BSI ? EN 13959:2004 (E) 4 Introduction In respect of
21、 potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this document: a) this document provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFTA; b) it should be noted t
22、hat, while the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. BS EN 13959:2004 Licensed Copy: :FULLNAME, : DATE, Uncontrolled Copy, (c) BSI ? EN 13959:2004 (E) 5 1 Scope The purpose of this docume
23、nt is to specify: field of application of anti-pollution check valves; backflow prevention properties, dimensional and physio-chemical properties, and properties of general hydraulic, mechanical and acoustic design for anti-pollution check valves of nominal sizes DN 6 to DN 250 inclusive; family E,
24、type A, controllable anti-pollution check valve (with test port); family E, type B, non-controllable anti-pollution check valve, including cartridge check valve; family E, type C, controllable anti-pollution double check valve (with test ports); family E, type D, non-controllable anti-pollution doub
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