1、BRITISH STANDARDBS EN 14453:2005Devices to prevent pollution by backflow of potable water Pipe interrupter with permanent atmospheric vent DN 10 to DN 20 Family D, type CThe European Standard EN 14453:2005 has the status of a British StandardICS 13.060.20; 23.060.50g49g50g3g38g50g51g60g44g49g42g3g58
2、g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Mon Apr 17 07:19:34 BST 2006, Uncontrolled Copy, (c) BSIBS EN 14453:2005This British Standard was publish
3、ed under the authority of the Standards Policy and Strategy Committee on 25 January 2006 BSI 25 January 2006ISBN 0 580 47600 6National forewordThis British Standard is the official English language version of EN 14453:2005. It supersedes BS 6281-3:1982 which is withdrawn.The UK participation in its
4、preparation was entrusted by Technical Committee B/504, Water supply, to Subcommittee B/504/14, Backflow prevention, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals fo
5、r change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or
6、European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to includ
7、e all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 16,
8、 an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Mon Apr 17 07:19:34 BST 2006, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME
9、EUROPENNEEUROPISCHE NORMEN 14453May 2005ICS 13.060.20; 23.060.50English versionDevices to prevent pollution by backflow of potable water - Pipeinterrupter with permanent atmospheric vent DN 10 to DN 20 -Family D, type CDispositifs de protection contre la pollution de leau potablepar retour - Rupteur
10、 vent atmosphrique permanent DN10 DN 20 - Famille D, type CSicherungseinrichtungen zum Schutz des Trinkwassersgegen Verschmutzung durch Rckflieen -Rohrunterbrecher mit stndig geffneten Luftein-trittsffnungen, DN 10 bis DN 20 - Familie D, Typ CThis European Standard was approved by CEN on 24 December
11、 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 without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained
12、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 by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat
13、 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, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Sl
14、ovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide f
15、or CEN national Members.Ref. No. EN 14453:2005: ELicensed Copy: Wang Bin, na, Mon Apr 17 07:19:34 BST 2006, Uncontrolled Copy, (c) BSIEN 14453:2005 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Nominal sizes.6 5 Designation 6 6 Marking
16、and technical documents.7 7 Symbolization.8 8 General design characteristics 8 9 Physico-chemical characteristics9 10 Characteristics and tests 9 11 Acoustic characteristics .14 Annex A (normative) Sampling and test sequence15 Bibliography 16 Licensed Copy: Wang Bin, na, Mon Apr 17 07:19:34 BST 2006
17、, Uncontrolled Copy, (c) BSIEN 14453:2005 (E) 3 Foreword This document (EN 14453:2005) 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 i
18、dentical text or by endorsement, at the latest by November 2005, and conflicting national standards shall be withdrawn at the latest by November 2005. This document has been developed with reference to EN1717 “Protection against pollution of potable water in water installations and general requireme
19、nts 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
20、reece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-bourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, na, Mon Apr 17 07:19:34 BST 2006, Uncontrolled Copy, (c) BSIEN 14453:2005 (E) 4 Introduct
21、ion 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 States of the EU or EFTA; b) it
22、should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. Licensed Copy: Wang Bin, na, Mon Apr 17 07:19:34 BST 2006, Uncontrolled Copy, (c) BSIEN 14453:2005 (E) 5 1 S
23、cope This document specifies: a) field of application; b) requirements for pipe interrupters with permanent atmospheric vent; c) dimensional, the physico-chemical properties and the properties of general hydraulic, mechanical and acoustic design of pipe interrupters with permanent atmospheric vent,
24、DN 10 to DN 20; d) test method and requirements for verifying these properties; e) marking and presentation; f) acoustics. This document specifies the characteristics of pipe interrupters with permanent atmospheric vent, DN 10 to DN 20 that are suitable for use in drinking water systems at pressures
25、 up to 1 MPa (10 bar) and temperatures up to 65 C and for 1 h 90 C. Backflow protection devices integrated in flushing valves are similar to DC and are not covered under this document. The requirements are stated in EN 12541. 2 Normative references The following referenced documents are indispensabl
26、e 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 806-1:2000, Specifications for installations inside buildings conveying water for human consumpt
27、ion Part 1: General EN 1717:2000, Protection against pollution of potable water in drinking water installations and general re-quirements of devices to prevent pollution by backflow EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and
28、designation (ISO 228-1:2000) 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 Laboratory tests on noise emission from appliances and equipment used in
29、water supply installations Part 3: Mounting and operating conditions for in-line valves and appliances (ISO 3822-3:1997) EN ISO 3822-4, Acoustics Laboratory tests on noise emission from appliances and equipment used in wa-ter supply installations Part 4: Mounting and operating conditions for special
30、 appliances (ISO 3822-4:1997) EN ISO 5167-1, Measurement of fluid flow by means of pressure differential devices Part 1: Orifice plates, nozzles and Venturi tubes inserted in circular cross-section conduits running full (ISO 5167-1:1991) EN ISO 6509, Corrosion of metals and alloys Determination of d
31、ezincification resistance of brass (ISO 6509:1981) Licensed Copy: Wang Bin, na, Mon Apr 17 07:19:34 BST 2006, Uncontrolled Copy, (c) BSIEN 14453:2005 (E) 6 ISO 7-1, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation ISO 9227, Corrosion tes
32、ts in artificial atmospheres Salt spray tests 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1717:2000, EN 806-1:2000 and the following apply. pipe interrupter with permanent atmospheric vent pipe interrupter fitted with air inlet port(s) which is (a
33、re) totally unrestricted and permanent. Water flows verti-cally downwards. The device prevents back flow by venting to atmosphere all the downstream and upstream elements. For the purpose of this document “pipe interrupter with permanent atmospheric vent DC“ is hereafter referred to as “device(s)“ 4
34、 Nominal size The nominal size of device (DN designated) shall correspond to the denomination of the thread according to Table 1. For specifications of threads refer to 8.2. Table 1 Nominal size vs thread size DN 10 15 20 Thread size 5 Designation The devices are designated by: a) name; b) reference
35、 to this document (EN 14453); c) family, type; d) DN; e) body material; f) acoustic group. Example for a designation: Pipe interrupter, EN 14453, family D, type C, DN 20, gun metal, I Licensed Copy: Wang Bin, na, Mon Apr 17 07:19:34 BST 2006, Uncontrolled Copy, (c) BSIEN 14453:2005 (E) 7 6 Marking a
36、nd technical documents 6.1 General In countries where the use of products made of dezincification resistant materials is not required, the dezincification resistant products according to EN ISO 6509, as well as the products which do not contain zinc, may be marked “DR“. In countries where the use of
37、 dezincification resistant materials is required, the dezincification resistant prod-ucts, as well as the products which do not contain zinc, shall be marked “DR“. 6.2 Marking The devices shall be marked permanently and visibly on the casing or on a fixed data plate. This information shall be on the
38、 upper side or on each lateral side of the device. The indications shall be in-delible and obtained by moulding, engraving or similar procedures. The marking shall indicate: a) name, manufacturers brand or logo; b) arrow indicating normal direction of flow; c) nominal size (DN); d) acoustic group; e
39、) letters indicating family and type of device; Marking a), b), c), and e) are obligatory. In case there is no marking for d), the device shall be considered as not classified acoustically. 6.3 Technical documents Each package and/or each batch and/or each catalogue of the supplier/manufacturer shal
40、l contain technical product information which shall be written in a commonly spoken language of the country in which the product is sold. It shall provide the following information: a) designation and purpose of the product; b) installation instructions; c) minimum installation height; d) (brand) na
41、me and address of supplier/manufacturer; e) instructions for maintenance, if any; f) spare part list, if any. Licensed Copy: Wang Bin, na, Mon Apr 17 07:19:34 BST 2006, Uncontrolled Copy, (c) BSIEN 14453:2005 (E) 8 7 Symbolization The graphic representation of the device is as follows (see Figure 1)
42、: Figure 1 Graphic symbol 8 General design characteristics 8.1 Design principle A typical design principle of the device is given in Figure 2. Key 1 Direction of water flow 2 Air Figure 2 Design principle 8.2 Connections Connections shall comply with EN ISO 228-1 or ISO 7-1. 8.3 Air inlets Air inlet
43、s shall be shrouded and designed to ensure that they cannot easily be blocked by deposits. Dimensions of external air inlets shall be as shown in Figure 2 and shall be verified as given in 10.3.2. Licensed Copy: Wang Bin, na, Mon Apr 17 07:19:34 BST 2006, Uncontrolled Copy, (c) BSIEN 14453:2005 (E)
44、9 9 Physico-chemical characteristics 9.1 Materials The materials and the coatings used, liable to come normally or accidentally in contact with potable water, shall satisfy the EU regulations concerning water quality. The materials and the coatings shall be: a) corrosion resistant in accordance with
45、 ISO 9227; b) prone to the least scaling possible; c) in conformity with the associated standards and regulations; d) compatible among themselves and with: water distributed; fluids or matter liable to come into contact with them; products normally used for disinfection operations of the network: po
46、tassium permanganate and so-dium hypochlorite. 9.2 Nature of materials The choice of materials is left to the discretion of the manufacturer a) Copper-zinc alloys containing more than 10 % zinc are subject to denzincification when submitted to wa-ter capable of dezincification. In the countries wher
47、e the use of products made of dezincification resistant ma-terials is required, the products shall guarantee a dezincification depth less than 200 um in any direction, they shall be tested in accordance with EN ISO 6509 and shall be marked in compliance with the indication in Clause 6; b) Neither th
48、e materials nor coatings used shall, by normal or accidental contact with drinking water, cause any risk of affecting or modifying the water up to a temperature of 90 C. The suitability of the water for human consumption is defined by national regulations; c) The manufacturer shall state in his tech
49、nical and sales literature the nature of the materials and the coat-ings selected; d) The materials, and in particular copper alloys, for which recommendations or standards exist shall comply with the relevant recommendations or standards. 10 Characteristics and tests 10.1 General Examples shown in the figures are for guidance only. Laboratory equipment shall be designed to ensure that the devices can be tested in accordance with the requirements. The accuracy of measurements and accuracy of measuring instruments shall
