EN 14453:2005

SLOVENSKI STANDARD
01-september-2005
Naprave za varovanje pred onesnaženjem pitne vode zaradi povratnega toka -
Cevni prekinjalnik z odprtinami za stalni dovod zraka, DN 10 do DN 20 – Družina D,
tip C
Devices to prevent pollution by backflow of potable water - Pipe interrupter with
permanent atmospheric vent DN 10 to DN 20 - Family D, type C
Sicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch
Rückfließen - Rohrunterbrecher mit ständig geöffneten Luftein-trittsöffnungen, DN 10 bis
DN 20 - Familie D, Typ C
Dispositifs de protection contre la pollution de l'eau potable par retour - Rupteur a évent
atmosphérique permanent DN 10 a DN 20 - Famille D, type C
Ta slovenski standard je istoveten z: EN 14453:2005
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.

EUROPEAN STANDARD
EN 14453
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2005
ICS 13.060.20; 23.060.50
English version
Devices to prevent pollution by backflow of potable water - Pipe
interrupter with permanent atmospheric vent DN 10 to DN 20 -
Family D, type C
Dispositifs de protection contre la pollution de l'eau potable Sicherungseinrichtungen zum Schutz des Trinkwassers
par retour - Rupteur à évent atmosphérique permanent DN gegen Verschmutzung durch Rückfließen -
10 à DN 20 - Famille D, type C Rohrunterbrecher mit ständig geöffneten Luftein-
trittsöffnungen, DN 10 bis DN 20 - Familie D, Typ C
This European Standard was approved by CEN on 24 December 2004.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, 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
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14453:2005: E
worldwide for CEN national Members.

Contents Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .6
4 Nominal sizes.6
5 Designation .6
6 Marking and technical documents.7
7 Symbolization.8
8 General design characteristics .8
9 Physico-chemical characteristics.9
10 Characteristics and tests .9
11 Acoustic characteristics .14
Annex A (normative) Sampling and test sequence.15
Bibliography .16

Foreword
This document (EN 14453:2005) 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 November 2005, and conflicting national standards shall be withdrawn
at the latest by November 2005.
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 organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Den-
mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-
bourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and
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) 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.
1 Scope
This document specifies:
a) field of application;
b) requirements for pipe interrupters with permanent atmospheric vent;
c) dimensional, the physico-chemical properties and the properties of general hydraulic, mechanical and
acoustic design of pipe interrupters with permanent atmospheric vent, DN 10 to DN 20;
d) test method and requirements for verifying these properties;
e) marking and presentation;
f) acoustics.
This document specifies the characteristics of pipe interrupters with permanent atmospheric vent, DN 10 to
DN 20 that are suitable for use in drinking water systems at pressures up to 1 MPa (10 bar) and temperatures
up to 65 °C and for 1 h 90 °C.
Backflow protection devices integrated in flushing valves are similar to DC and are not covered under this
document. The requirements are stated in EN 12541.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated refer-
ences, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
EN 806-1:2000, Specifications for installations inside buildings conveying water for human consumption —
Part 1: General
EN 1717:2000, Protection against pollution of potable water in drinking water installations and general re-
quirements of devices to prevent pollution by backflow
EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads — Part 1: Dimensions,
tolerances and designation (ISO 228-1:2000)
EN ISO 3822-1, Acoustics — Laboratory tests on noise emission from appliances and equipment used in
water supply installations — Part 1: Method of measurement (ISO 3822-1:1999)
EN ISO 3822-3, Acoustics — Laboratory tests on noise emission from appliances and equipment used in
water supply installations — Part 3: Mounting and operating conditions for in-line valves and appliances
(ISO 3822-3:1997)
EN ISO 3822-4, Acoustics — Laboratory tests on noise emission from appliances and equipment used in wa-
ter supply installations — Part 4: Mounting and operating conditions for special appliances (ISO 3822-4:1997)
EN ISO 5167-1, Measurement of fluid flow by means of pressure differential devices — Part 1: Orifice plates,
nozzles and Venturi tubes inserted in circular cross-section conduits running full (ISO 5167-1:1991)
EN ISO 6509, Corrosion of metals and alloys — Determination of dezincification resistance of brass
(ISO 6509:1981)
ISO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances
and designation
ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1717:2000, EN 806-1:2000 and the
following apply.
pipe interrupter with permanent atmospheric vent
pipe interrupter fitted with air inlet port(s) which is (are) totally unrestricted and permanent. Water flows verti-
cally downwards. The device prevents back flow by venting to atmosphere all the downstream and upstream
elements.
For the purpose of this document "pipe interrupter with permanent atmospheric vent DC" is hereafter referred
to as "device(s)"
4 Nominal size
The nominal size of device (DN designated) shall correspond to the denomination of the thread according to
Table 1.
For specifications of threads refer to 8.2.
Table 1 — Nominal size vs thread size
DN 10 15 20
Thread size ⅜ ½ ¾
5 Designation
The devices are designated by:
a) name;
b) reference to this document (EN 14453);
c) family, type;
d) DN;
e) body material;
f) acoustic group.
Example for a designation:
Pipe interrupter, EN
...