SIST EN 13076:2003

Devices to prevent pollution by backflow of potable water - Unrestricted air gap-Family A - Type A

This CEN standard specifies the characteristics of type AA air gaps for inlet or feed pipes. Air gaps that comply with the requirements of this standard are devices for protection of drinking water installations from pollution. In addition to factory assembled products this standard includes requirements for site constructed air gaps. This is a performance standard for "AA" air gaps. Materials of construction must be fit for the purpose and application to ensure compliance with this standard during normal working use.

Sicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch Rückfließen - Ungehinderter freier Auslauf-Familie A - Typ A, Freie Ausläufe Typ AA

Diese Europäische Norm legt die Anforderungen an freie Ausläufe Typ AA für Zuleitungsrohre fest. Freie Ausläufe, die Anforderungen dieser Norm erfüllen, sind Einrichtungen zum Schutz von Trinkwasser-Installationen gegen Verunreinigungen. Zusätzlich zu Anforderungen an fabrikmäßig montierte Bauteile enthält diese Norm Anforderungen an vor Ort eingebaute freie Ausläufe. Dies ist eine Gebrauchtauglichkeitsnorm für freie Ausläufe Typ AA.

Dispositifs de protection contre la pollution de l'eau potable par retour - Surverse totale - Famille A, type A

La présente Norme européenne spécifie les caractéristiques et les exigences des surverses totales Famille A Type A destinées à la protection contre la pollution des installations d'eau potable.
La présente norme s'applique aux surverses assemblées en usine et aux surverses réalisées sur site, et définit les caractéristiques physico-chimiques des matériaux de construction convenant à l'usage prévu afin d'assurer la conformité à la norme dans des conditions d'exploitation normales.

Naprave za varovanje pred onesnaženjem pitne vode zaradi povratnega toka - Neoviran prosti iztok - Družina A - Tip A

General Information

• Status: Published
• Publication Date: 30-Sep-2003
• ICS: 13.060.20 - Drinking water
• ICS: 23.060.01 - Valves in general
• ICS: 91.140.60 - Water supply systems
• Technical Committee: IOVO - Water supply and waste water engineering
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Oct-2003
• Due Date: 01-Oct-2003
• Completion Date: 01-Oct-2003
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Ref Project: EN 13076:2003 - Devices to prevent pollution by backflow of potable water - Unrestricted air gap-Family A - Type A

Overview

EN 13076:2003 (CEN) specifies requirements for unrestricted air gaps (Family A - Type A) used to prevent pollution of potable water by backflow. The standard covers both factory-assembled and site‑constructed “AA” air gaps used between a feed inlet and a receiving vessel. EN 13076 is a performance standard: materials and installation must be fit for purpose and compatible with drinking‑water use to ensure continued compliance in normal working conditions.

Key topics and technical requirements

• Function: Visible, unobstructed air gap permanently placed vertically between the lowest point of the inlet orifice and the receiving vessel’s water surface.
• Single supply dimension: Air gap A ≥ 2 × D (D = internal bore of last metre of supply pipe or DN), and not less than 20 mm.
• Multiple supplies: Air gap A ≥ 2 × (sum of all inlet bores D), and not less than 20 mm.
• Orientation and clearance: Discharge must be downward (within 15° of vertical) and unobstructed within 2 × D horizontally and vertically below the outlet.
• Fixing and stability: Float valves or feed devices and their supply pipes must be securely fixed to prevent movement or buckling.
• Backflow/pressure considerations: If the receiving vessel can be pressurized, installation must ensure the inlet orifice cannot be contaminated by ascending backflow; flow‑limiting or non‑return devices may be required upstream.
• Testing/maximum level: Maximum water level under positive pressure fault conditions is defined and must be assessed using specified flow rates (Q = 0.14·D² L/min) or a dynamic pressure of 1 MPa where applicable.
• Materials: Materials must comply with applicable EU/EFTA drinking‑water acceptance criteria and be compatible with the water and any contacting substances.
• Marking & documentation: Factory products shall be permanently marked (manufacturer, family/type, DN/D, EN reference) and supplied with installation instructions to preserve the air gap integrity.
• Normative reference: EN 1717:2000 (protection against pollution of potable water) is referenced.

Applications and users

EN 13076 applies where a physical air gap is required to protect potable water systems from contamination by backflow or back‑pressure. Typical uses include:

• Protection of water supply points feeding receiving vessels, tanks, cisterns or appliances
• Installations in buildings, industrial processes, laboratories, and utility systems where direct connection risk exists Primary users:
• Manufacturers of backflow prevention and plumbing devices
• Plumbing designers and specifiers
• Water utilities and asset owners
• Installers, site contractors and commissioning engineers
• Building inspectors, compliance officers and standards writers

Related standards

• EN 1717:2000 - Protection against pollution of potable water and general requirements for backflow prevention devices (normative reference).
• National plumbing and drinking‑water regulations may also apply; EN 13076 does not replace country‑specific use restrictions or installation rules.

Keywords: EN 13076, unrestricted air gap, AA air gap, backflow prevention, potable water, drinking water protection, Family A Type A, CEN standard.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Naprave za varovanje pred onesnaženjem pitne vode zaradi povratnega toka - Neoviran prosti iztok - Družina A - Tip ASicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch Rückfließen - Ungehinderter freier Auslauf-Familie A - Typ A, Freie Ausläufe Typ AADispositifs de protection contre la pollution de l'eau potable par retour - Surverse totale - Famille A, type ADevices to prevent pollution by backflow of potable water - Unrestricted air gap-Family A - Type A91.140.60Sistemi za oskrbo z vodoWater supply systems23.060.01Ventili na splošnoValves in general13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 13076:2003SIST EN 13076:2003en01-oktober-2003SIST EN 13076:2003SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13076March 2003ICS 13.060.20; 23.060.01English versionDevices to prevent pollution by backflow of potable water -Unrestricted air gap-Family A - Type ADispositifs de protection contre la pollution de l'eaupotabble par retour - Surverse totale-Famille A - Type ASicherungseinrichtungen zum Schutz des Trinkwassersgegen Verschmutzung durch Rückfließen - Ungehinderterfreier Auslauf-Familie A - Typ A, Freie Ausläufe Typ AAThis European Standard was approved by CEN on 28 November 2002.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 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 Management Centre has the same status as the officialversions.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 UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13076:2003 ESIST EN 13076:2003
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