SIST EN 13077:2018
(Main)Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B
Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B
This draft 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 by backflow. This draft 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 draft European Standard during normal working use.
Sicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch Rückfließen - Freier Auslauf mit nicht kreisförmigem Überlauf (uneingeschränkt) - Familie A, Typ B
Diese Europäische Norm legt die Eigenschaften und Anforderungen für freie Ausläufe mit nicht kreisförmigem Überlauf (uneingeschränkt), Familie A, Typ B, für Nenn-Fließgeschwindigkeiten bis 3 m/s fest. Freie Ausläufe sind Sicherungseinrichtungen zum Schutz des Trinkwassers vor Verunreinigungen durch Rückfließen in Trinkwasser-Installationen. Diese Europäische Norm gilt für freie Ausläufe von fabrikmäßig montierten Bauteilen sowie für vor Ort gebaute freie Ausläufe und definiert die physikalisch-chemischen Eigenschaften der Konstruktionswerkstoffe, die gebrauchstauglich und für den Anwendungszweck geeignet sind, um im normalen Betrieb eine Übereinstimmung mit dieser Europäischen Norm sicherzustellen.
Dispositifs de protection contre la pollution de l’eau potable par retour - Surverse avec trop-plein non circulaire (totale) - Famille A, type B
Le présent projet de Norme européenne spécifie les caractéristiques et les exigences relatives aux surverses avec trop-plein non circulaire (totale) de la Famille A, Type B, pour des débits nominaux n’excédant pas 3 m/s. Les surverses sont des dispositifs destinés à protéger l’eau potable des installations d’eau contre la pollution par retour. Le présent projet de Norme européenne s’applique à la fois aux surverses faisant partie de produits assemblés en usine et à celles réalisées sur site. Elle définit les caractéristiques physico-chimiques des matériaux de construction utilisés en vue de l’usage et de l’application prévus, afin d’assurer la conformité au présent projet de Norme européenne dans des conditions de service normal.
Naprave za varovanje pred onesnaženjem pitne vode zaradi povratnega toka - Prosti iztok s prelivom nekrožne oblike (neoviran) - Družina A, tip B
Ta osnutek evropskega standarda določa značilnosti in zahteve zračne reže z nekrožnim presežkom (neomejen) družine A, tipa B za nazivno hitrost pretoka, ki ne presega 3 m/s. Zračne reže so naprave za zaščito pitne vode v vodnih napeljavah pred onesnaženjem zaradi povratnega toka. Ta osnutek evropskega standarda se nanaša na zračne reže v tovarniško sestavljenih izdelkih in sestavljene zračne reže na mestu uporabe ter določa fizikalno-kemijske značilnosti gradbenih materialov, ki se uporabljajo za ta namen in zavoljo zagotavljanja skladnosti s tem osnutkom evropskega standarda med običajno delovno rabo.
General Information
Relations
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 - 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 BDispositifs de protection contre la pollution de l’eau potable par retour - Surverse avec trop-plein non circulaire (totale) - 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 13077:2018SIST EN 13077:2018en,fr,de01-maj-2018SIST EN 13077:2018SLOVENSKI
STANDARDSIST EN 13077:20091DGRPHãþD
SIST EN 13077:2018
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13077
March
t r s z ICS
s uä r x rä t r Supersedes EN
s u r y yã t r r zEnglish Version
Devices to prevent pollution by backflow of potable water Family A æ Type B Dispositifs de protection contre la pollution de l 5eau potable par retour æ Surverse avec tropæplein non
Sicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch Rückfließen æ Freier Auslauf mit nicht kreisförmigem Überlauf This European Standard was approved by CEN on
t x February
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
9
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s u r y yã t r s z ESIST EN 13077:2018
EN 13077:2018 (E) 2 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 . 7 7 Requirements . 7 7.1 General . 7 7.2 Water inlet device . 7 7.3 Overflow arrangements . 8 7.4 Air gap distance A. 10 7.4.1 Single supply . 10 7.4.2 Multiple supplies . 11 7.4.3 Backflow/back pressure . 11 7.5 Verification . 11 7.5.1 General . 11 7.5.2 Procedure for verification by test (see 7.4.1 a) or 7.4.2) . 11 7.5.3 Procedures for verification by calculation . 12 8 Marking (not required for products constructed on-site) . 12 9 Technical documents . 13 Annex A (informative)
Relationship between h and l for air gap Family A, Type B with rectangular overflow . 14 Annex B (normative)
Alternative overflow arrangements . 15 B.1 General . 15 B.2 Internal overflow arrangement . 15 B.3 Letterbox overflow extension arrangement . 16 Annex C (normative)
Vacuum Test . 17 C.1 Apparatus . 17 C.2 Procedure. 17 C.3 Requirement . 19
SIST EN 13077:2018
EN 13077:2018 (E) 3 European foreword This document (EN 13077:2018) 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 2018, and conflicting national standards shall be withdrawn at the latest by September 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN not be held responsible for identifying any or all such patent rights. This document supersedes EN 13077:2008. Compared to the previous edition of the document the following changes have been made: a) the scope has been adjusted; b) Figure 3 was updated and redrawn; c) terms and definitions were updated; d) mainly Clause 7 was revised and improved; e) the entire standard was revised editorially. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 13077:2018
EN 13077:2018 (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 restriction 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 regulations concerning the use and/or the characteristics of this product remain in force. SIST EN 13077:2018
EN 13077:2018 (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 by backflow. This European Standard applies to air gaps in factory-assembled products and to constructed air gaps in situ, and defines requirements and methods to verify and ensure compliance with this European Standard during normal working use. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. 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 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 806-1 and 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 of the receiving vessel having an overflow which is non-circular in design 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 with all outlets closed SIST EN 13077:2018
EN 13077:2018 (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 1 to entry: 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 DN of the inlet connection 4 Designation An air gap with non-circular overflow (unrestricted) Family A, Type B is designated by: — name; — reference to this European Standard, i.e. EN 13077; — family and type; — denomination shall correspond to the type of connection of the inlet; — maximum permitted flow rate. EXAMPLE Air gap, EN 13077, Family A, Type B, G 1/2, 14 l/min. 5 Symbolization The graphic representation of the air gap with non-circular overflow (unrestricted) Family A, Type B is as follows (see Figure 2).
Figure 2 — Graphic symbol SIST EN 13077:2018
EN 13077:2018 (E) 7 6 Materials All materials coming into contact with water intended for human consumption shall present no health risk nor cause any change of the drinking water in terms of quality, appearances, smell or taste. All materials shall be compatible among themselves and with the water supplied and with the fluids or substances that can come into contact with them. There are no special requirements concerning the materials downstream of the feed orifice provided they do not have any harmful effect on the upstream part or the overflow arrangement. 7 Requirements 7.1 General The protection assembly comprises three parts: — water inlet device; — receiving vessel (container); — non-circular overflow. 7.2 Water inlet device Every float-operated valve or other device, which controls the inflow of water to a receiving vessel, shall be securely and rigidly fixed to the vessel. Every feed pipe supplying water to such a valve assembly or other device shall be fixed in its position to prevent it from moving or buckling and to maintain a 2D radial clearance around the outlet. If a 2D clearance is not present in addition to the air gap validation a vacuum test in accordance with Annex C shall be undertaken. The direction of flow from a feed pipe into the receiving vessel shall be into air at atmospheric pressure, downwards and not more than 30° from the vertical. If the direction of flow is not more than 15°, the air gap shall be validat
...
SLOVENSKI STANDARD
oSIST prEN 13077:2017
01-februar-2017
Naprave za varovanje pred onesnaženjem pitne vode zaradi povratnega toka -
Prosti iztok s prelivom nekrožne oblike (neoviran) - Družina A, tip B
Devices to prevent pollution by backflow of potable water - Air gap with non-circular
overflow (unrestricted) - Family A - Type B
Sicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch
Rückfließen - Freier Auslauf mit nicht kreisförmigem Überlauf (uneingeschränkt) - Familie
A, Typ B
Dispositifs de protection contre la pollution de l’eau potable par retour - Surverse avec
trop-plein non circulaire (totale) - Famille A, type B
Ta slovenski standard je istoveten z: prEN 13077
ICS:
13.060.20 Pitna voda Drinking water
23.060.99 Drugi ventili Other valves
91.140.60 Sistemi za oskrbo z vodo Water supply systems
oSIST prEN 13077:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 13077:2017
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oSIST prEN 13077:2017
DRAFT
EUROPEAN STANDARD
prEN 13077
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2016
ICS 13.060.20 Will supersede EN 13077:2008
English Version
Devices to prevent pollution by backflow of potable water
- Air gap with non-circular overflow (unrestricted) -
Family A - Type B
Dispositifs de protection contre la pollution de l'eau Sicherungseinrichtungen zum Schutz des Trinkwassers
potable par retour - Surverse avec trop-plein non gegen Verschmutzung durch Rückfließen - Freier
circulaire (totale) - Famille A, type B Auslauf mit nicht kreisförmigem Überlauf
(uneingeschränkt) - Familie A, Typ B
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey 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: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13077:2016 E
worldwide for CEN national Members.
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oSIST prEN 13077:2017
prEN 13077:2016 (E)
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 Water inlet device . 7
7.3 Overflow arrangements . 8
7.4 Air gap distance A. 10
7.4.1 Single supply . 10
7.4.2 Multiple supplies . 10
7.4.3 Backflow/back pressure . 11
7.5 Verification . 11
7.5.1 General . 11
7.5.2 Procedure for verification by measurement (see 7.4.1 a) or 7.4.2) . 11
7.5.3 Procedures for verification by calculation . 12
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 Internal overflow arrangement . 14
B.3 Letterbox overflow extension arrangement . 14
Annex C (normative) Vacuum Test . 16
C.1 Apparatus . 16
C.2 Procedure. 16
C.3 Requirement . 17
2
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oSIST prEN 13077:2017
prEN 13077:2016 (E)
European foreword
This document (prEN 13077:2016) 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 13077:2008.
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 defined overflow arrangements added;
c) editorial errors corrected.
3
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oSIST prEN 13077:2017
prEN 13077:2016 (E)
Introduction
In respect of potential adverse effects on the quality of water intended for human consumption, caused
by the product covered by this draft European Standard:
a) this draft European Standard provides no information as to whether the product may be used
without restriction 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 regulations concerning the use and/or the characteristics of this product remain in force.
4
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oSIST prEN 13077:2017
prEN 13077:2016 (E)
1 Scope
This draft 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 by backflow. This
draft 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 draft European Standard during normal
working use.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, 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
of the receiving vessel having an overflow which is non-circular in design
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 with all outlets closed
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
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oSIST prEN 13077:2017
prEN 13077:2016 (E)
3.4
dimension h
height between the spillover level and the critical level
Note 1 to entry: 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 DN of the inlet connection
4 Designation
An air gap with non-circular overflow (unrestricted) Family A, Type B is designated by:
— name;
— reference to this draft European Standard, i.e. prEN 13077;
— family and type;
— denomination shall correspond to the type of connection of the inlet
— maximum permitted flow rate
EXAMPLE Air gap, prEN 13077, Family A, Type B, G 1/2, 14 l/minute.
5 Symbolization
The graphic representation of the air gap with non-circular overflow (unrestricted) Family A, Type B is
as follows (see Figure 2).
Figure 2 — Graphic symbol
6 Materials
The manufacturer shall state the type of materials chosen in his technical and commercial documents.
The materials used in water installations, including the materials of protection units in contact with
drinking water, shall satisfy the European Standards and national acceptance criteria and/or national
restrictions for use currently in force in EU and EFTA.
6
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oSIST prEN 13077:2017
prEN 13077:2016 (E)
They shall be compatible among themselves and with the water supplied and with the fluids or
substances that can come into contact with them.
There are no special requirements concerning the materials downstream of the atmospheric outlet
opening provided they do not have any harmful effect on the upstream part or the overflow
arrangement.
7 Requirements
7.1 General
The protection assembly comprises three parts:
— water inlet device;
— receiving vessel (container);
— non-circular overflow.
7.2 Water inlet device
Every float-operated valve or other device, which controls the inflow of water to a receiving vessel, shall
be securely and rigidly fixed to the vessel.
Every feed pipe supplying water to such a valve assembly or other device shall be fixed
...
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