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CEN

EN 12729:2002

(Main)

Devices to prevent pollution by backflow of potable water - Controllable backflow preventer with reduced pressure zone - Family B - Type A

Devices to prevent pollution by backflow of potable water - Controllable backflow preventer with reduced pressure zone - Family B - Type A

The purpose of this standard is to define - the field of application; - the dimensional, physico-chemical, design, hydraulic, mechanical and acoustic characteristics; - the working and the prescriptions for the tests to check , these characteristics; - the marking and the presentation. To be adhered to for reduced pressure principle backflow preventers, controllable BA.

Sicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch Rückfließen - Systemtrenner mit kontrollierbarer druckreduzierter Zone - Familie B - Typ A

Diese Europäische Norm legt den Anwendungsbereich, die maßlichen und physikalisch-chemischen Anforde-rungen, die Anforderungen an die Konstruktion, die hydraulischen, mechanischen und akustischen Anforderungen für Systemtrenner mit kontrollierbarer druckreduzierter Zone, Familie B, Typ A fest.
Die vorliegende Norm gilt für Systemtrenner mit kontrollierbarer druckreduzierter Zone, Familie B, Typ A, die verhindern sollen, dass durch Rücksaugen oder Rückdrücken Wasser in das Trinkwasserversorgungsnetz zurückfließt, wenn der Druck in diesem Netz niedriger ist als in der nachgeschalteten Anlage.
Die Norm gilt für Systemtrenner der Nennweiten DN 8 bis DN 250.
Diese Norm gilt für Systemtrenner mit einem Nenndruck PN 10, die ohne Abänderung oder Nachstellung arbeiten:
¾ bei jedem Druck bis 1 MPa (10 bar);
¾ bei jeder Druckschwanking bis 1 MPa (10 bar);
¾ der Dauerbelastung bei einer Grenztemperatur von 65 °C sowie bei 90 °C für den Zeitraum von 1 h.
Die Norm enthält ferner Festlegungen für die Prüfverfahren und Anforderungen zum Nachweis dieser Eigen-schaften, die Kennzeichnung und den Lieferzustand.

Dispositifs de protection contre la pollution par retour de l'eau potable - Disconnecteur à zone de pression réduite contrôlable - Famille B - Type A

La présente Norme européenne spécifie le domaine d'application, les caractéristiques dimensionnelles, physico-chimiques, de conception hydrauliques, mécaniques et acoustiques de disconnecteurs à zone de pression réduite contrôlable de Famille B, Type A.
La présente norme s'applique aux disconnecteurs de Famille B, Type A à zone de pression réduite contrôlable, destinés à empêcher le retour d'une eau par contre pression ou siphonnage dans le réseau de distribution d'eau potable, lorsque la pression dans ce dernier est plus faible que dans le circuit placé en aval.
Elle est applicable aux disconnecteurs contrôlables de dénomination DN 8 à DN 250.
Elle s'applique aux disconnecteurs contrôlables de PN 10 qui doivent pouvoir fonctionner sans modification ni réglage :
   à toute pression jusqu'à 1 MPa (10 bar) ;
   pour toute variation de pression jusqu'à 1 MPa (10 bar) ;
   en service continu à une température limite de 65 °C et de 90 °C pendant 1 h au maximum.
Elle spécifie également les méthodes d'essai et les exigences pour vérifier leurs caractéristiques, le marquage et la présentation à la livraison.

Naprave za varovanje pred onesnaženjem pitne vode zaradi povratnega toka - Sistemski ločevalnik z nadzorovanim območjem znižanega tlaka - Družina B - Tip A

General Information

Status
Withdrawn
Publication Date
19-Nov-2002
Withdrawal Date
28-Feb-2023
ICS
13.060.20 - Drinking water
91.140.60 - Water supply systems
Technical Committee
CEN/TC 164 - Water supply
Drafting Committee
CEN/TC 164/WG 14 - Valves and fitting for buildings and devices to prevent pollution by backflow
Current Stage
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
89/106/EEC - Construction products
Mandate
M/EXP - Expected mandates in CPD field.
Ref Project
SIST EN 12729:2003 - Devices to prevent pollution by backflow of potable water - Controllable backflow preventer with reduced pressure zone - Family B - Type A

Relations

Replaced By
EN 12729:2023 - Devices to prevent pollution by backflow of potable water - Controllable backflow preventer with reduced pressure zone - Family B - Type A
Effective Date
19-Jan-2023

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 12729:2003
01-oktober-2003
1DSUDYH]DYDURYDQMHSUHGRQHVQDåHQMHPSLWQHYRGH]DUDGLSRYUDWQHJDWRND
6LVWHPVNLORþHYDOQLN]QDG]RURYDQLPREPRþMHP]QLåDQHJDWODND'UXåLQD%7LS
$
Devices to prevent pollution by backflow of potable water - Controllable backflow
preventer with reduced pressure zone - Family B - Type A
Sicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch
Rückfließen - Systemtrenner mit kontrollierbarer druckreduzierter Zone - Familie B - Typ
A
Dispositifs de protection contre la pollution par retour de l'eau potable - Disconnecteur a
zone de pression réduite contrôlable - Famille B - Type A
Ta slovenski standard je istoveten z: EN 12729:2002
ICS:
13.060.20 Pitna voda Drinking water
91.140.60 Sistemi za oskrbo z vodo Water supply systems
SIST EN 12729:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

EUROPEAN STANDARD
EN 12729
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2002
ICS 13.060.20; 91.140.60
English version
Devices to prevent pollution by backflow of potable water -
Controllable backflow preventer with reduced pressure zone -
Family B - Type A
Dispositifs de protection contre la pollution par retour de Sicherungseinrichtungen zum Schutz des Trinkwassers
l'eau potable - Disconnecteur à zone de pression réduite gegen Verschmutzung durch Rückfließen - Systemtrenner
contrôlable - Famille B - Type A mit kontrollierbarer druckreduzierter Zone - Familie B - Typ
A
This European Standard was approved by CEN on 7 September 2002.
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,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, 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
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12729:2002 E
worldwide for CEN national Members.

---------------------- Page: 2 ----------------------

EN 12729:2002 (E)
Contents
page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions.6
4 Denomination .7
5 Designation.7
6 Symbolization.7
7 Physico-chemical characteristics .8
7.1 Materials.8
7.2 Nature of the materials .8
8 Design .9
8.1 General.
...

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