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 23.060.50g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g4
2、8g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 13959:2004This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2006 BSI 2008ISBN 978 0 580 63069 9National forewordThis British Standard is the UK implementation of E
3、N 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 It supersedes BS 6282-1:1982 which is withdrawn.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 supply, to Subcommittee B/504/14, Backflow prevention.A list of organizations represented on this subcommittee can be obtained on request to its se
4、cretary.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 cannot co
5、nfer immunity from legal obligations.Amendments/corrigenda issued since publicationDate Comments3 20080 November Addition of supersession details to national forewordEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 13959October 2004ICS 23.060.50English versionAnti-pollution check valves - DN 6 to D
6、N 250 inclusive family E,type A, B, C and DClapets de non retour antipollution DN 6 DN 250 - FamilleE, 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 I
7、nternal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national 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 memb
8、er.This European Standard exists in three official versions (English, French, German). A version in any 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
9、 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, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingd
10、om.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement 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: EEN 13959:20
11、04 (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
12、6.1 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 materia
13、ls14 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 tightnes
14、s 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 products used for disinfe
15、ction 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 t
16、he 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 13959:2004EN 13959:2004 (E) 3 Foreword This document (EN 13959:2004)
17、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, and conflicting national
18、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/CENELEC Internal Regulati
19、ons, 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-bourg, Malta, Netherlands, Nor
20、way, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 13959:2004EN 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
21、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 use and/or the characteristics of this product
22、 remain in force. BS EN 13959:2004EN 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 desi
23、gn 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 C, controllable anti-pollution doub
24、le 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 incorporate a check valve functio
25、n. 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. For application fea
26、sibility 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
27、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 13959:2004EN 139
28、59:2004 (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 the referenced document (including any amendments) applies. EN 558-1, I
29、ndustrial 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 desig-nated Part 1: Steel flanges. EN 1092-2, Flanges and the
30、ir 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 flanges. EN 1254-1, Copper and copper alloys Plumbin
31、g 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 comp
32、ression 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 against pollution of potable w
33、ater 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 ISO 3822-3, Acoustics La
34、boratory 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 inserted in circular cro
35、ss-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 13959:2004EN 13959:200
36、4 (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 port) controllable single check valve, consisting one closing element, is mechan
37、ical 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 flow condi-tion exists the valve is closed by anticip
38、ation 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 check valve non-controllable single check valve, consisting one closin
39、g 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 pressure is higher downstream or no flow condition exists the valv
40、e 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 (called cartridge check valve) 3.1.3 family E, type C, con
41、trollable 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 when the pressure in the direction of flow upstream
42、 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 needs this type of check valve has a test coc
43、k 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 direction only. It will open automatically w
44、hen 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. A family E,
45、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 “devices“ 3.2 flanged anti-pollut
46、ion 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 an inspection hatc
47、h; BS EN 13959:2004EN 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 combined product is an end product which incorporates beside the check valve function oth
48、er 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. The dimensions of the end connections shall be either equal to or one DN smaller,
49、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 double 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)
