1、Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 04/02/2009 07:21, Uncontrolled Copy, (c) BSIg49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58F
2、amily E, type A, B, C and DICS 23.060.50Anti-pollution check valves DN 6 to DN 250 inclusive BRITISH STANDARDBS EN 13959:2004Incorporating corrigendum October 2008BS EN 13959:2004Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 04/02/2009 07:21, Uncontrolled Copy, (c) BSIThis British Standard
3、was published under the authority of the Standards Policy and Strategy Committee on 31 October 2006 BSI 2008ISBN 978 0 580 63069 9Amendments/corrigenda issued since publicationDate Comments3 20080 November Addition of supersession details to national forewordreferences 11.8 should read 11.9.This pub
4、lication 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.National forewordThis British Standard is the UK implementation of EN 13959:2004. It su
5、persedes BS 6282-1:1982 which is withdrawn. The UK participation in its preparation was entrusted by Technical 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 i
6、s drawn to errors in Figures 10 and 11, in which all the clause EUROPEAN STANDARDNORME 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,
7、 Type A, B, 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 na
8、tional standard without 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 an
9、y other language made by 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,
10、 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 STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGM
11、anagement Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13959:2004: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 04/02/2009 07:21, Uncontrolled Copy, (c) BSIEN 13959:2004
12、(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 product 8 4 Nominal size8 5 Designation .8 6 Marking and technical documents.9 6.1
13、 Marking 9 6.2 Technical documents .9 7 Symbolization10 8 General design characteristics 10 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 9.2 Nature of materials1
14、4 10 Test Arrangements .15 10.1 Sequence of testing15 10.2 Apparatus 16 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 11.5 Pressure tightness u
15、nder 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 products used for disinfecti
16、on 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 differential at which the
17、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 13959:2004Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 04/02/2
18、009 07:21, Uncontrolled Copy, (c) BSIEN 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 publicatio
19、n 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 2005. This standard has been worked out in reference EN 1717, Protection against pollution of potable water in wa-ter installations and general requirem
20、ents of devices 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, G
21、reece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-bourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 13959:2004Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 04/02/2009 07:21, Uncontrolled Copy, (c) BS
22、IEN 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 information as to whether the product may be used without restriction in any of the Member St
23、ates 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 EN 13959:2004Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 04/02/2009 07:21
24、, Uncontrolled Copy, (c) BSIEN 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 general hydraulic, mechanical and acoustic design for
25、 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 C, controllable anti-pollution double che
26、ck 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 incorporate a check valve function. Sto
27、p 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. For application feasibili
28、ty 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 document are of
29、 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 13959:2004Licensed Cop
30、y: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 04/02/2009 07:21, Uncontrolled Copy, (c) BSIEN 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,
31、the latest edition 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, valve
32、s, fittings and accessories, 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 accessor
33、ies, PN desig-nated 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 c
34、opper tubes. EN 1254-3, Copper and copper alloys Plumbing 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
35、flow resistance using water as test fluid. EN 1717, Protection against 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 supp
36、ly installations Part 1: Method of measurement (ISO 3822-1:1999). EN 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,
37、 Measurement of fluid flow by means of pressure differential devices inserted 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 9
38、227, Corrosion tests in artificial atmospheres Salt spray tests. BS EN 13959:2004Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 04/02/2009 07:21, Uncontrolled Copy, (c) BSIEN 13959:2004 (E) 7 3 Terms and definitions For the purposes of this document, the following terms and definitions apply
39、. 3.1 Anti-pollution check valves ul53.1.1 family E, type A, controllable anti-pollution check valve (with test port) 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
40、 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 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 ty
41、pe of check valve has a test cock upstream of the closing element 3.1.2 family E, type B, non-controllable anti-pollution check 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 automatical
42、ly 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 mechanical as-sembly or a spring. A famil
43、y E, type B, non-controllable anti-pollution check valve is constructed in two formats: With housing (final product); Without housing (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
44、 two independent acting closing elements, is a 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 higher downstream or no
45、flow condition 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 each closing element 3.1.4 family E, type D, non-controllable anti-pollution double check valv
46、e non-controllable double check valve, consisting two independent acting closing elements, is a mechanical pro-tection 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
47、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. A family E, type D, non-controllable anti-pollution double check valve is constructed in two formats: With housing (fina
48、l product); Without housing (called cartridge double check valve) For the purpose of this document, “anti-pollution check valves“ are hereafter referred to as “devices“ 3.2 flanged anti-pollution check valves; class a and class b controllable check valves need to be accessible for inspection, test a
49、nd 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 an inspection hatch; BS EN 13959:2004Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 04/02/2009 07:21, Uncontrolled Copy, (c) BSIEN 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 produ
