SIST EN 13077:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Naprave za varovanje pred onesnaženjem pitne vode zaradi povratnega toka - Prosti iztok s prelivom nekrožne oblike (neoviran) - Družina A, tip BSicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch Rückfließen - Freier Auslauf mit nicht kreisförmigem Überlauf (uneingeschränkt) - Familie A, Typ BDispositif de protection contre la pollution de l'eau potable par retour - Surverse avec trop-plein non-circulaire (to-tale) - Famille A - Type BDevices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B91.140.60Sistemi za oskrbo z vodoWater supply systems23.060.99Drugi ventiliOther valves13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 13077:2008SIST EN 13077:2009en,fr,de01-januar-2009SIST EN 13077:2009SLOVENSKI
STANDARDSIST EN 13077:20041DGRPHãþD



SIST EN 13077:2009



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13077June 2008ICS 13.060.20; 23.060.99; 91.140.60Supersedes EN 13077:2003
English VersionDevices to prevent pollution by backflow of potable water - Airgap with non-circular overflow (unrestricted) - Family A - Type BDispositif de protection contre la pollution de l'eau potablepar retour - Surverse avec trop-plein non-circulaire (to-tale)- Famille A - Type BSicherungseinrichtungen zum Schutz des Trinkwassersgegen Verschmutzung durch Rückfließen - Freier Auslaufmit nicht kreisförmigem Überlauf (uneingeschränkt) -Familie A, Typ BThis European Standard was approved by CEN on 29 May 2008.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 on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13077:2008: ESIST EN 13077:2009



EN 13077:2008 (E) 2 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.7 7 Requirements.7 8 Marking (not required for site constructed products).12 9 Technical documents.12 Annex A (informative)
Relationship between h and l for air gap Family A, Type B with rectangular overflow.13 Annex B (normative)
Alternative overflow arrangements.14 B.1 General.14 B.2 Horizontal overflow arrangement.14 B.3 Letterbox overflow extension arrangement.15
SIST EN 13077:2009



EN 13077:2008 (E) 3 Foreword This document (EN 13077:2008) 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 December 2008, and conflicting national standards shall be withdrawn at the latest by December 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 13077:2003. Compared to the previous edition of the document the following changes have been made: a) definitions in Clause 3 revised; b) Annex B on alternative overflow arrangements added; c) editorial errors corrected. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Repub-lic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 13077:2009



EN 13077:2008 (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 European Standard: a) this European Standard provides no information as to whether the product may be used without restric-tion in any of the Member State of the EU or EFTA; b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regu-lations concerning the use and/or the characteristics of this product remain in force. SIST EN 13077:2009



EN 13077:2008 (E) 5
1 Scope This European Standard specifies the characteristics and the requirements of air gap with non-circular overflow (unrestricted) Family A, Type B for nominal flow velocity not exceeding 3 m/s. Air gaps are devices for protection of potable water in water installations from pollution. This European 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 European Standard during normal working use. 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 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 document, the terms and definitions given in EN 1717:2000 and the following apply. 3.1 air gap with non-circular overflow (unrestricted) Family A, Type B ("AB" air gap) permanent and vertical distance between the lowest point of the inlet orifice and the critical water level, and whose overflow is non-circular in design 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 SIST EN 13077:2009



EN 13077:2008 (E) 6 3.3 critical water level physical or piezometric level of the liquid reached in any part of the appliance 2 s after closing the water inlet starting from maximum level 3.4 dimension h height between the spillover level and the critical level NOTE See 7.4 for measurement and calculation. For example, see Annex A. 3.5 maximum level highest water level H reached above the spillover level with flow rate Q applied and all outlets closed 3.6 diameter of feed pipe (bore D) maximum internal diameter (or calculated from the equivalent cross sectional area) found within the last metre of the supply pipe or the DN of the inlet connection 4 Designation An air gap with non-circular overflow (unrestricted) Family A, Type B i
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