prEN 13076

SLOVENSKI STANDARD
01-september-2026
Naprave za varovanje pred onesnaženjem pitne vode zaradi povratnega toka -
Neoviran prosti iztok - Družina A - Tip A
Devices to prevent pollution by backflow of potable water - Unrestricted air gap-Family A
- Type A
Sicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch
Rückfließen - Ungehinderter freier Auslauf-Familie A - Typ A
Dispositifs de protection contre la pollution de l'eau potable par retour - Surverse totale -
Famille A, type A
Ta slovenski standard je istoveten z: prEN 13076
ICS:
13.060.20 Pitna voda Drinking water
23.060.01 Ventili na splošno Valves in general
91.140.60 Sistemi za oskrbo z vodo Water supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2026
ICS 23.060.01 Will supersede EN 13076:2003
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 Sicherungseinrichtungen zum Schutz des Trinkwassers
potable par retour - Surverse totale - Famille A, type A gegen Verschmutzung durch Rückfließen -
Ungehinderter freier Auslauf-Familie A - Typ A
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 164.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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 CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13076:2026 E
worldwide for CEN national Members.

Contents Page
European 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 Characteristics and tests . 7
7.2.1 General. 7
7.2.2 General tolerances and measurements . 7
7.2.3 Accuracy of measuring instruments . 7
7.2.4 Measurements . 7
7.3 Water inlet device . 7
7.4 Overflow arrangements . 9
7.5 Lid for the receiving vessel . 9
7.6 Air gap distance A . 9
7.6.1 General. 9
7.6.2 Single supply . 10
7.6.3 Multiple supplies . 10
7.6.4 Backflow/back pressure . 10
7.7 Verification . 11
7.7.1 Procedure for verification by measurement . 11
7.7.2 Procedures for verification by test . 11
8 Marking . 12
9 Technical documents . 12
Bibliography . 13

European foreword
This document (prEN 13076:2026) has been prepared by Technical Committee CEN/TC 164 “Water
supply”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 13076:2003.
This document includes the following significant technical changes with respect to EN 13076:2003:
— Figure 3 has been updated and redrawn;
— dimension D has been redefined;
— test introduced that verifies the upstream components aren’t contaminated by a downstream fluid
by splashing, turbulence etc.;
— validation procedure has been introduced;
— entire document has been editorially revised.
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 provides no information as to whether the product might be used without restriction
in any of the Member State of the EU or EFTA;
b) while awaiting the adoption of verifiable European criteria, existing national regulations concerning
the use and/or the characteristics of this product remain in force.
1 Scope
This document specifies the characteristics and the requirements of unrestricted air gap Family A, Type A
for nominal flow velocity not exceeding 3 m/s. Air gaps are devices for protection of potable water in
water installations from pollution by backflow. This document applies to air gaps in factory-assembled
products and to constructed air gaps in situ and specifies requirements and methods to verify and ensure
compliance with this document during normal working use.
The fluid in the receiving vessel is assumed to have similar properties to the water supply. Where this is
not the case, additional care or tests could be required to verify the efficacy of the solution in practical
use.
The AA device is intended to be used in potable water installations according to EN 806 (series).
Sanitary tapware when installed onto a receiving vessel (e.g. washbasin etc.) might have some restriction
of its overflow. This will not compromise the water supply as the tapware might have an air gap, as
detailed for example in EN 200 (dimension E), that provides an air gap disconnection. If this is the case,
then backflow protection will be assumed to be adequate, and no further testing/verification will be
needed.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 806-1, Specifications for installations inside buildings conveying water for human consumption —
Part 1: General
EN 806-5:2012, Specifications for installations inside buildings conveying water for human consumption —
Part 5: Operation and maintenance
EN 1717, Protection against pollution of water intended for human consumption in potable water
installations and general requirements for devices to prevent pollution by backflow
3 Terms and definitions
For the purposes of this document, the terms and definitions given in given in EN 806-1 and EN 1717 and
the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
air gap with unrestricted spillover Family A, Type A
visible, permanent and vertical distance between the lowest point of the inlet orifice and the spillover
level of the receiving vessel having a complete and unrestricted spillover
Note 1 to entry: 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 wi
...