EN 14451:2020
(Main)Devices to prevent pollution by backflow of potable water - In-line anti-vacuum valves DN 10 to DN 50 inclusive - Family D, type A
Devices to prevent pollution by backflow of potable water - In-line anti-vacuum valves DN 10 to DN 50 inclusive - Family D, type A
This document specifies the field of application, the dimensional, the physico-chemical, the design, the hydraulic, the mechanical, and the acoustic characteristics of in-line anti vacuum valve family D Type A.
This document covers in-line anti vacuum valve family D Type A, intended to prevent pollution of potable water by backflow, caused by backsiphoning only.
It is applicable to in-line anti vacuum valve in denominations DN 10 up to DN 50.
It covers in-line anti vacuum valve of PN 10 that are capable of working without modification or adjustment:
- at any pressure, up to 1 MPa (10 bar);
- with any pressure variation, up to 1 MPa (10 bar);
- in permanent duty at a limited temperature of 65 °C and for maximum 1 h at 90 °C.
It specifies also the test methods and requirements for verifying their characteristics, the marking and the presentation at delivery.
Sicherungseinrichtungen zur Verhütung von Trinkwasserverunreinigung durch Rückfließen - Rohrleitungsbelüfter DN 10 bis einschließlich DN 50 - Familie D, Typ A
Dieses Dokument legt den Anwendungsbereich, die maßlichen, physikalisch-chemischen, Auslegungs-, hydraulischen, mechanischen und akustischen Eigenschaften der Rohrleitungsbelüfter Familie D, Typ A fest.
Dieses Dokument gilt ausschließlich für Rohrleitungsbelüfter Familie D, Typ A, die zur Verhütung von Trinkwasserverunreinigungen durch Rückfließen, verursacht durch Rücksaugen, vorgesehen sind.
Es gilt für Rohrleitungsbelüfter der Bezeichnungen DN 10 bis DN 50.
Es behandelt Rohrleitungsbelüfter mit PN 10, die ohne Abänderung oder Nachstellung funktionsfähig sind:
- bei Druckwerten, bis 1 MPa (10 bar);
- bei Druckschwankungen, bis 1 MPa (10 bar);
- im Dauerbetrieb bei einer Grenztemperatur von 65 °C und für maximal 1 h bei 90 °C.
Es legt zudem die Prüfverfahren und Anforderungen zur Verifizierung ihrer Eigenschaften, der Kennzeichnung und der Bereitstellung bei der Auslieferung fest.
Dispositifs de protection contre la pollution de l'eau potable par retour - Soupape anti-vide en ligne DN 10 à DN 50 inclus - Famille D, type A
Le présent document spécifie le domaine d’application ainsi que les caractéristiques dimensionnelles, physico-chimiques, de conception, hydrauliques, mécaniques et acoustiques des soupapes anti-vide en ligne de la famille D, type A.
Le présent document couvre uniquement les soupapes anti-vide en ligne de la famille D, type A, destinées à éviter la pollution de l’eau potable par retour, provoquée par siphonnage.
Il s’applique aux soupapes anti-vide en ligne de dénomination DN 10 à DN 50.
Il couvre les soupapes anti-vide en ligne de PN 10 qui, sans modification ni ajustement, peuvent fonctionner :
- à n’importe quelle pression, jusqu’à 1 MPa (10 bar) ;
- sous n’importe quelle variation de pression, jusqu’à 1 MPa (10 bar) ;
- de manière ininterrompue jusqu’à une température limite de 65 °C, et pendant 1 h, au maximum, à 90 °C.
Il spécifie également les méthodes d’essai et les exigences permettant de contrôler leurs caractéristiques, le marquage et la présentation à la livraison.
Naprave za varovanje pred onesnaženjem pitne vode zaradi povratnega toka - Ventili za preprečevanje podtlaka DN 10 do DN 50 - Družina D, tip A
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2020
Nadomešča:
SIST EN 14451:2005
Naprave za varovanje pred onesnaženjem pitne vode zaradi povratnega toka -
Ventili za preprečevanje podtlaka DN 10 do DN 50 - Družina D, tip A
Devices to prevent pollution by backflow of potable water - In-line anti-vacuum valves DN
10 to DN 50 inclusive - Family D, type A
Sicherungseinrichtungen zur Verhütung von Trinkwasserverunreinigung durch
Rückfließen - Rohrleitungsbelüfter DN 10 bis einschließlich DN 50 - Familie D, Typ A
Dispositifs de protection contre la pollution de l'eau potable par retour - Soupape anti-
vide en ligne DN 10 à DN 50 inclus - Famille D, type A
Ta slovenski standard je istoveten z: EN 14451:2020
ICS:
13.060.20 Pitna voda Drinking water
23.060.50 Blokirni ventili Check valves
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.
EN 14451
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2020
EUROPÄISCHE NORM
ICS 13.060.20; 23.060.50 Supersedes EN 14451:2005
English Version
Devices to prevent pollution by backflow of potable water
- In-line anti-vacuum valves DN 10 to DN 50 inclusive -
Family D, type A
Dispositifs de protection contre la pollution de l'eau Sicherungseinrichtungen zur Verhütung von
potable par retour - Soupape anti-vide en ligne DN 10 à Trinkwasserverunreinigung durch Rückfließen -
DN 50 inclus - Famille D, type A Rohrleitungsbelüfter DN 10 bis einschließlich DN 50 -
Familie D, Typ A
This European Standard was approved by CEN on 24 May 2020.
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 CEN-CENELEC 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 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, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14451:2020 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Nominal size . 7
5 Designation. 7
6 Marking and technical documents . 8
6.1 General . 8
6.2 Marking . 8
6.3 Technical documents . 8
7 Symbolization . 9
8 General design characteristics . 9
8.1 Design principle . 9
8.2 Connections . 10
8.3 Air inlets . 10
9 Materials and surface finishes . 10
9.1 General . 10
9.2 Materials . 10
9.3 Corrosion resistance . 10
10 Characteristics and tests . 10
10.1 General . 10
10.2 Test sequence . 11
10.3 Visual verification (Stage 1) . 11
10.4 Tightness test (Stage 2) . 11
10.4.1 Test equipment . 11
10.4.2 Test . 12
10.4.3 Requirement . 12
10.5 Flow rate/pressure loss (Stage 3) . 13
10.5.1 Test equipment . 13
10.5.2 Test . 14
10.5.3 Requirement . 14
10.6 Bending moment, mechanical strength of body and leak tightness (Stage 4) . 14
10.6.1 General . 14
10.6.2 Test equipment . 15
10.6.3 Test . 15
10.6.4 Requirements . 16
10.7 Endurance test (Stage 6) . 16
10.7.1 Test procedure 1 . 16
10.7.2 Test procedure 2 . 17
10.7.3 Test procedure 3 . 19
10.8 Vacuum test (Stage 7) . 20
10.8.1 Vacuum test equipment . 20
10.8.2 Procedure . 21
10.8.3 Requirement . 21
11 Acoustic characteristics . 21
11.1 General . 21
11.2 Procedure . 21
11.2.1 Mounting and operating conditions. 21
11.2.2 Test methods . 21
11.3 Test criteria . 21
11.3.1 Expression of the results . 21
11.3.2 Noise classification . 21
Annex A (informative) Sampling and test sequence . 22
European foreword
This document (EN 14451:2020) has been prepared by Technical Committee CEN/TC 164 “Water
supply”, the secretariat of which is held by AFNOR.
This document shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by December 2020, and conflicting national standards shall be
withdrawn at the latest by December 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 14451:2005.
In comparison with the previous edition, the following changes have been made:
a) title changed;
b) scope of application revised;
c) Clause 2 updated;
d) nominal size range in Clause 4 restricted;
e) Clause 9 adapted.
This document has been developed with reference to EN 1717 “Protection against pollution of potable
water in water installations and general requirements of devices to prevent pollution by backflow”.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this document: 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, Turkey and the United
Kingdom.
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 may be used without restriction
in any of the Member States of the EU or EFTA;
b) note 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.
1 Scope
This document specifies the field of application, the dimensional, the physico-chemical, the design, the
hydraulic, the mechanical, and the acoustic characteristics of in-line anti vacuum valve family D Type A.
This document covers in-line anti vacuum valv
...
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