《【BS英国标准】BS EN 139592004 Antipollution check valves—N 6 to —N 250 inclusive Family E, typ.doc》由会员分享，可在线阅读，更多相关《【BS英国标准】BS EN 139592004 Antipollution check valves—N 6 to —N 250 inclusive Family E, typ.doc（36页珍藏版）》请在三一办公上搜索。
1、Licensed Copy: :FULLNAME, : DATE, Uncontrolled Copy, (c) BSIBRITISH STANDARDBS EN13959:2004Incorporating corrigendum October 2008Anti-pollution checkvalves DN 6 to DN 250 inclusive Family E, type A, B, C and DICS 23.060.50 BS EN 13959:2004National forewordThis British Standard is the UK implementati
2、on of EN 13959:2004. It supersedes BS 6282-1:1982 which is withdrawn.The UK participation in its preparation was entrusted by Technical CommitteeB/504, Water supply, to Subcommittee B/504/14, Backflow prevention.A list of organizations represented on this subcommittee can be obtained on request to i
3、ts secretary.Attention is drawn to errors in Figures 10 and 11, in which all the clause references 11.8 should read 11.9.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard canno
4、t confer immunity from legal obligations.Licensed Copy: :FULLNAME, : DATE, Uncontrolled Copy, (c) BSIThis British Standard was published under the authorityStrategy Committee on 31 October 2006 BSI 2008ISBN 978 0 580 63069 9Amendments/corrigenda issued since publicationDateComments30 November 2008 A
5、ddition of supersession details to national forewordEUROPEAN STANDARD NORME EUROPENNEEUROPISCHE NORMEN 13959October 2004ICS 23.060.50English versionAnti-pollution check valves - DN 6 to DN 250 inclusive family E, type A, B, C and DClapets de non retour antipollution DN 6 DN 250 - FamilleE, Type A, B
6、, C et DRckflussverhinderer - DN 6 bis DN 250 - Familie E, Typ A, B, C und DThis 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 conditions for giving this European Standard the status of a national s
7、tandard 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 official versions (English, French, German). A version in any other
8、 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, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, Fran
9、ce, 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 STANDARDIZATION C O M I T EUR O P EN DE NOR M A L I S A TI ON EUR OP I S C HES
10、KOM I TEE F R NOR M UNG Management Centre: rue de Stassart, 36 B-1050 BrusselsLicensed Copy: :FULLNAME, : DATE, Uncontrolled Copy, (c) BSI 2004 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members.Ref. No. EN 13959:2004: EBS EN 13959:2004EN 13959:200
11、4 (E)Licensed Copy: :FULLNAME, : DATE, Uncontrolled Copy, (c) BSIContentspageForeword .3Introduction.41Scope .52Normative references .63Terms and definitions .73.1Anti-pollution check valves .73.2Flanged anti-pollution check valves; class a and class b .73.3Combined product .84Nominal size .85Design
12、ation .86Marking and technical documents.96.1Marking .96.2Technical documents .97Symbolization.108General design characteristics .108.1Overall length and diameters of check valves .108.2End connections .128.3Test and drain ports.128.4Other characteristics .139Physio-chemical characteristics.149.1Mat
13、erials .149.2Nature of materials.1410Test Arrangements .1510.1Sequence of testing .1510.2Apparatus .1611Hydraulic and mechanical characteristics .1711.1High velocity (stage 1) .1711.2Flow rate/pressure loss (stage 2) .1811.3Mechanical strength of the body (stage 3).1911.4Bending moment (stage 4) .20
14、11.5Pressure tightness under a low reverse pressure differential (stage 5) .2211.6Pressure tightness under a high reverse pressure and verification that the check valvehas not jammed (stage 6) .2411.7Pressure differential at which the check valve closes (stage 7) .2511.8Compatibility with products u
15、sed for disinfection of networks (stage 8).2511.9Endurance (stage 9) .2611.10Pressure tightness under a low reverse pressure differential (stage 10) .2811.11Pressure tightness under a high reverse pressure and verification that the check valvehas not jammed (stage 11) .2811.12Pressure differential a
16、t which the check valve closes (stage 12) .2812General working characteristics .2912.1Resistance to corrosion .2912.2Acoustic characteristics.2913Presentation at delivery.30Annex A (informative) Numbers of test devices/tests .3131Licensed Copy: :FULLNAME, : DATE, Uncontrolled Copy, (c) BSIForewordTh
17、is 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 identical text or by endorsement, at the latest by April 2005
18、, 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 devices to prevent pollution by backflow.According to the CEN
19、/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, Ireland, Italy, Latvia, Lithuania, Luxem- bo
20、urg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.Licensed Copy: :FULLNAME, : DATE, Uncontrolled Copy, (c) BSIIntroductionIn respect of potential adverse effects on the quality of water intended for human consumption, caused by the p
21、roduct 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 that, while the adoption of verifiable European criteria, existing national regulations concerning the
22、use and/or the characteristics of this product remain in force.Licensed Copy: :FULLNAME, : DATE, Uncontrolled Copy, (c) BSI1 ScopeThe purpose of this document is to specify: field of application of anti-pollution check valves; backflow prevention properties, dimensional and physio-chemical propertie
23、s, 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, type A, controllable anti-pollution check valve (with test port); family E, type B, non-controllable anti-pollution check valve, including cartr
24、idge check valve; family E, type C, controllable anti-pollution double check valve (with test ports); family E, type D, non-controllable anti-pollution double check valve, including cartridge double check valve; test procedures and requirements for verifying the backflow protection properties of sto
25、p valves, draw-off taps etc. which incorporate a check valve function. Stop valves, draw off taps etc, need also to comply with a recognised standard; marking; presentation at delivery.This document specifies the characteristics of anti-pollution check valves of DN 6 up to and including DN 250 that
26、are suitable for use in drinking water systems. For application feasibility see Table 1.Table 1 Nominal size vs Conditions of useNominal size (DN)Max. Operating temperatureMax. Operating pressureInstallationDN 5065 C + 90 C, 1 h1 000 kPa (10 bar)Any positionDN 5065 C1 000 kPa (10 bar)Horizontal only
27、Anti-pollution check valves covered by this document are of pressure class PN 10. In case of devises with pres- sure class PN 16, the antipollution check valves has to comply with the tests which characterise the PN of the devise.The field of application of EN 1717 is limited to 10 bar, flanges coul
28、d be drilled in PN 16 pattern.Licensed Copy: :FULLNAME, : DATE, Uncontrolled Copy, (c) BSI2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated refer- ences, only the edition cited applies. For undated references, the latest editio
29、n of the referenced document (including any amendments) applies.EN 558-1, Industrial valves Face-to-face and centre-to-face dimensions of metal valves for use in flanges pipe systems Part 1: PN-designated valves.EN 1092-1, Flanges and their joints Circular flanges for pipes, valves, fittings and acc
30、essories, PN desig- nated Part 1: Steel flanges.EN 1092-2, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN desig- nated Part 2: Cast iron flanges.EN 1092-3, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN desig- nate
31、d Part 3: Copper alloy flanges.EN 1254-1, Copper and copper alloys Plumbing fittings Part 1: Fittings with ends for capillary soldering or capillary brazing to copper tubes.EN 1254-2, Copper and copper alloys Plumbing fittings Part 2: Fittings with compression ends for use with copper tubes.EN 1254-3, Copper and copper alloys Plumbing fittings Part 3: Fittings with compression e
