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1、BRITISH STANDARDBS EN 13959:2004Incorporating corrigendum October 2008Anti-pollution check valves DN 6 to DN 250 inclusive Family E,type A,B,C and DICS 23.060.50?Licensed Copy:FULLNAME,:DATE,Uncontrolled Copy,(c)BSIBS EN 13959:2004This British Standard was published under the authority of the Standa
2、rds Policy and Strategy Committee on 31 October 2006 BSI 2008ISBN 978 0 580 63069 9National forewordThis British Standard is the UK implementation of EN 13959:2004.It supersedes BS 6282-1:1982 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee B/504,Water
3、 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 publication does not purport to in
4、clude 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 publicationDateComments3 20080 NovemberAddition of supersession details to national f
5、orewordLicensed Copy:FULLNAME,:DATE,Uncontrolled Copy,(c)BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 13959October 2004ICS 23.060.50 English 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 EuropeanStandard the status of a national standard wi
7、thout any alteration.Up-to-date lists and bibliographical references concerning such nationalstandards 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 language made b
8、y translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria,Belgium,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary
9、,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,Slovakia,Slovenia,Spain,Sweden,Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre:rue de Stassart,36 B-1050 Brus
10、sels 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref.No.EN 13959:2004:ELicensed Copy:FULLNAME,:DATE,Uncontrolled Copy,(c)BSIEN 13959:2004(E)2 Contents page Foreword.3 Introduction.4 1 Scope.5 2 Normative references.6 3 Terms and definiti
11、ons.7 3.1 Anti-pollution check valves.7 3.2 Flanged anti-pollution check valves;class a and class b.7 3.3 Combined product.8 4 Nominal size.8 5 Designation.8 6 Marking and technical documents.9 6.1 Marking.9 6.2 Technical documents.9 7 Symbolization.10 8 General design characteristics.10 8.1 Overall
12、 length and diameters of check valves.10 8.2 End connections.12 8.3 Test and drain ports.12 8.4 Other characteristics.13 9 Physio-chemical characteristics.14 9.1 Materials.14 9.2 Nature of materials.14 10 Test Arrangements.15 10.1 Sequence of testing.15 10.2 Apparatus.16 11 Hydraulic and mechanical
13、characteristics.17 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 11.5 Pressure tightness under a low reverse pressure differential(stage 5).22 11.6 Pressure tightness under a high reverse press
14、ure 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 products used for disinfection of networks(stage 8).25 11.9 Endurance(stage 9).26 11.10 Pressure tightness under a low reverse pressure
15、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 differential at which the check valve closes(stage 12).28 12 General working characteristics.29 12.1 Resistance to corrosion.29 12.2 Acous
16、tic characteristics.29 13 Presentation at delivery.30 Annex A(informative)Numbers of test devices/tests.31 BS EN 13959:2004Licensed Copy:FULLNAME,:DATE,Uncontrolled Copy,(c)BSIw w w.b z f x w.c o mEN 13959:2004(E)3 Foreword This document(EN 13959:2004)has been prepared by Technical Committee CEN/TC
17、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,and conflicting national standards shall be withdrawn at the latest by April 20
18、05.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/CENELEC Internal Regulations,the national standards organizations of the following
19、 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-bourg,Malta,Netherlands,Norway,Poland,Portugal,Slovakia,Slovenia,Spain,Sweden,Switzerland and United King
20、dom.BS EN 13959:2004Licensed Copy:FULLNAME,:DATE,Uncontrolled Copy,(c)BSIw w w.b z f x w.c o mEN 13959:2004(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 document:a)this document provides no infor
21、mation 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 use and/or the characteristics of this product remain in force.BS E
22、N 13959:2004Licensed Copy:FULLNAME,:DATE,Uncontrolled Copy,(c)BSIw w w.b z f x w.c o mEN 13959:2004(E)5 1 Scope The purpose of this document is to specify:field of application of anti-pollution check valves;backflow prevention properties,dimensional and physio-chemical properties,and properties of g
23、eneral 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 cartridge check valve;family E,type
24、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 stop valves,draw-off taps etc.which incorpo
25、rate 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 are suitable for use in drinking water systems.
26、For application feasibility see Table 1.Table 1 Nominal size vs Conditions of use Nominal size(DN)Max.Operating temperature Max.Operating pressure Installation DN 50 65 C+90 C,1 h 1 000 kPa(10 bar)Any position DN 50 65 C 1 000 kPa(10 bar)Horizontal only Anti-pollution check valves covered by this do
27、cument 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 could be drilled in PN 16 pattern.BS EN 13959:2004Lice
28、nsed Copy:FULLNAME,:DATE,Uncontrolled Copy,(c)BSIw w w.b z f x w.c o mEN 13959:2004(E)6 2 Normative references The 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 edition of t
29、he 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 accessories,PN d
30、esig-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-nated Part 3:Copper alloy flang
31、es.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 Plumb
32、ing fittings Part 3:Fittings with compression ends for use with plastics pipes.EN 1254-4,Copper and copper alloys Plumbing fittings Part 4:Fittings combining other end connections with capillary or compression ends.EN 1267,Valves-Test of flow resistance using water as test fluid.EN 1717,Protection a
33、gainst pollution of potable water in water installations and general requirements of de-vices to prevent pollution by backflow.EN ISO 3822-1,Acoustics Laboratory tests on noise emission from appliances and equipment used in water supply installations Part 1:Method of measurement(ISO 3822-1:1999).EN
34、ISO 3822-3,Acoustics Laboratory tests on noise emission from appliances and equipment used in water supply installations Part 3:Mounting and operating conditions for in-live valves and appliances(ISO 3822-3:1997).EN ISO 5167-3,Measurement of fluid flow by means of pressure differential devices inser
35、ted in circular cross-section conduits running full Part 3:Nozzles and Venturi nozzles(ISO 5167-3:2003).EN ISO 6509,Corrosion of metals and alloys Determination of dezincification resistance of brass(ISO 6509:1981).ISO 9227,Corrosion tests in artificial atmospheres Salt spray tests.BS EN 13959:2004L
36、icensed Copy:FULLNAME,:DATE,Uncontrolled Copy,(c)BSIw w w.b z f x w.c o mEN 13959:2004(E)7 3 Terms and definitions For the purposes of this document,the following terms and definitions apply.3.1 Anti-pollution check valves ul53.1.1 family E,type A,controllable anti-pollution check valve(with test po
37、rt)controllable single check valve,consisting one closing element,is mechanical protection device to permit flow in one direction only.It will open automatically when the pressure in the direction of flow upstream of the valve is greater than the pressure downstream.In case when the pressure is high
38、er downstream or no flow condi-tion exists the valve is closed by anticipation acting under a force,for example of a mechanical assembly or a spring.For verification needs this type of check valve has a test cock upstream of the closing element 3.1.2 family E,type B,non-controllable anti-pollution c
39、heck valve non-controllable single check valve,consisting one closing element,is a mechanical protection device to per-mit flow in one direction only.It will open automatically when the pressure in the direction of flow upstream of the valve is greater than the pressure downstream.In case when the p
40、ressure is higher downstream or no flow condition exists the valve is closed by anticipation acting under a force,for example of a mechanical as-sembly or a spring.A family E,type B,non-controllable anti-pollution check valve is constructed in two formats:With housing(final product);Without housing(
41、called cartridge check valve)3.1.3 family E,type C,controllable double anti-pollution check valve(with test ports)controllable double check valve,consisting of two independent acting closing elements,is a mechanical protection device to permit flow in one direction only.It will open automatically wh
42、en the pressure in the direction of flow upstream of the valve is greater than the pressure downstream.In case when the pressure is higher downstream or no flow condition exists the valve is closed by anticipation acting under a force,for example of a mechanical assembly or a spring.For verification
43、 needs this type of check valve has a test cock upstream of each closing element 3.1.4 family E,type D,non-controllable anti-pollution double check valve non-controllable double check valve,consisting two independent acting closing elements,is a mechanical pro-tection device to permit flow in one di
44、rection only.It will open automatically when the pressure in the direction of flow upstream of the valve is greater than the pressure downstream.In case when the pressure is higher downstream or no flow condition exists the valve is closed by anticipation acting under a force,for example of a mechan
45、ical assembly or a spring.A family E,type D,non-controllable anti-pollution double check valve is constructed in two formats:With housing(final product);Without housing(called cartridge double check valve)For the purpose of this document,anti-pollution check valves are hereafter referred to as devic
46、es 3.2 flanged anti-pollution check valves;class a and class b controllable check valves need to be accessible for inspection,test and replacement.To assist their repair,flanged check valves may be provided with an inspection hatch and for designation pur-poses two classes are specified:Class a:with
47、 an inspection hatch;BS EN 13959:2004Licensed Copy:FULLNAME,:DATE,Uncontrolled Copy,(c)BSIw w w.b z f x w.c o mEN 13959:2004(E)8 Class b:without an inspection hatch;The installation of either a class a device or a class b device depends on national installation requirements 3.3 combined product a co
48、mbined product is an end product which incorporates beside the check valve function other function(s)EXAMPLES stop valves,draw-off taps etc.which incorporate a check valve function 4 Nominal size For the purpose of this document the nominal size DN as given in Table 6 relates to flow characteristics
49、.The dimensions of the end connections shall be either equal to or one DN smaller,or one DN greater than the nominal size of the device,except for the flanged devices of which the connecting size shall correspond to DN.The DN-range covered by this document for single check valves(type A and B)and do
50、uble check valves(type C and D)is DN 6 to DN 250 inclusive.Limitations are given in the applicable tables.5 Designation Devices are designated by:its name;its family(E);its type(A,B,C and D);its class(a or b for flanged devices only,see 3.2 and 8.4.2.1);its nominal size(DN)(see Table 6);its pressure