Dansk standard DS/EN 13076 1. udgave 2003-06-20 Tilbagestrømningssikringer til sikring mod forurening af drikkevand Frit luftgab Familie A Type A Devices to prevent pollution by backflow of potable water Unrestricted air gap Family A Type A
DS/EN 13076 København DS projekt: 35556 ICS: 91.140.60 Deskriptorer: anti-siffoneringssystemer,definition,definitioner,kontrol af drikkevand,drikkevandsindstallationer,drikkevandsforsyning,hygiejne, indløb,mærkning,materialer,udløb,rørinstallationer,rørsystemer,forurening af drikkevand,drikkevand,beskyttelse af vandressourcer,kvalitet,tilbagestrømning,tekniske dokumenter,ventiler,vandvarmere,vandforurening,rensning af vand,vandkvalitet,vandforsyning Første del af denne publikations betegnelse er: DS/EN, hvilket betyder, at det er en europæisk standard, der har status som dansk standard. Denne publikations overensstemmelse er: IDT med: EN 13076:2003. DS-publikationen er på engelsk. DS-publikationstyper Dansk Standard udgiver forskellige publikationstyper. Typen på denne publikation fremgår af forsiden. Der kan være tale om: Dansk standard standard, der er udarbejdet på nationalt niveau eller er baseret på et andet lands nationale standard, eller standard, der er udarbejdet på internationalt og/eller europæisk niveau og har fået status som dansk standard DS-information publikation, der er udarbejdet på nationalt niveau og ikke har opnået status som standard, eller publikation, der er udarbejdet på internationalt og/eller europæisk niveau og ikke har fået status som standard, fx en teknisk rapport, eller europæisk præstandard DS-håndbog samling af standarder, eventuelt suppleret med informativt materiale DS-hæfte publikation med informativt materiale Til disse publikationstyper kan endvidere udgives tillæg og rettelsesblade DS-publikationsform Publikationstyperne udgives i forskellig form som henholdsvis fuldtekstpublikation (publikationen er trykt i sin helhed) godkendelsesblad (publikationen leveres i kopi med et trykt DS-omslag) elektronisk (publikationen leveres på et elektronisk medie) DS-betegnelse Alle DS-publikationers betegnelse begynder med DS efterfulgt af et eller flere præfikser og et nr. fx DS 383, DS/EN 5414 osv. Hvis der efter nr. er angivet et A eller Cor, betyder det, enten at det er et tillæg eller et rettelsesblad til hovedstandarden, eller at det er indført i hovedstandarden. DS-betegnelse angives på forsiden. Overensstemmelse med anden publikation: Overensstemmelse kan enten være IDT, EQV, NEQ eller MOD IDT: Når publikationen er identisk med en given publikation. EQV: Når publikationen teknisk er i overensstemmelse med en given publikation, men præsentationen er ændret. NEQ: Når publikationen teknisk eller præsentationsmæssigt ikke er i overensstemmelse med en given standard, men udarbejdet på baggrund af denne. MOD: Når publikationen er modificeret i forhold til en given publikation.
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 13076 March 2003 ICS 13.060.20; 23.060.01 English version Devices to prevent pollution by backflow of potable water - Unrestricted air gap-family A - Type A Dispositifs de protection contre la pollution de l'eau potabble par retour - Surverse totale-famille A - Type A This European Standard was approved by CEN on 28 November 2002. Sicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch Rückfließen - Ungehinderter freier Auslauf-Familie A - Typ A, Freie Ausläufe Typ AA 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 standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2003 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13076:2003 E
Contents page Foreword...3 Introduction...4 1 Scope...5 2 Normative references...5 3 Terms and definitions...5 4 Designation...6 5 Symbolization...6 6 Materials...6 7 Requirements...7 7.1 General...7 7.2 Water inlet device...7 7.3 Air gap (distance 'A')...9 8 Marking (not required for site constructed products)...10 9 Technical documents...10 2
Foreword This document (EN 13076:2003) 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 September 2003, and conflicting national standards shall be withdrawn at the latest by September 2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. 3
Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this standard: a) this standard provides no information as to whether the product may be used without restriction in any member states of the EU or EFTA; b) it 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. 4
1 Scope This European standard specifies the characteristics and the requirements of unrestricted air gaps Family A Type A intended for protection of potable water in water installations from pollution. This standard applies to air gaps in factory assembled products and to constructed air gaps in situ, and defines the physico-chemical characteristics of materials of construction used for the purpose and application to ensure compliance with this standard during normal working use. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies(including amendments). EN 1717:2000, Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow. 3 Terms and definitions For the purposes of this European Standard, the terms and definitions of EN 1717:2000 and the following terms and definitions apply. 3.1 unrestricted air gap Family A Type A AA air gap is a visible, unobstructed and complete air gap, placed permanently and vertically between the lowest point of the feed inlet orifice and surface of the receiving vessel that determines the maximum operational level at which the device overflows NOTE See Figure 1 for the design principle. Figure 1 Design principle 3.2 spillover level level at which water will start to overflow the receiving vessel with all outlets closed 3.3 diameter of feed pipe (bore "D") diameter D is the maximum internal diameter found within the last metre of the supply pipe or the DN of the inlet connection NOTE the dimension is in millimetres. 5