SIST EN 14506:2005

SLOVENSKI STANDARD
SIST EN 14506:2005
01-september-2005
Naprave za varovanje pred onesnaženjem pitne vode zaradi povratnega toka –
Avtomatski preusmerjevalnik – Družina H, tip C
Devices to prevent pollution by backflow of potable water - Automatic diverter - Family H,
type C
Sicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch
Rückfließen - Automatischer Umsteller - Familie H, Typ C
Dispositifs de protection contre la pollution de l'eau potable par retour - Inverseur a
retour automatique - Famille H, type C
Ta slovenski standard je istoveten z: EN 14506:2005
ICS:
13.060.20 Pitna voda Drinking water
91.140.60 Sistemi za oskrbo z vodo Water supply systems
SIST EN 14506:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 14506:2005

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SIST EN 14506:2005
EUROPEAN STANDARD
EN 14506
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2005
ICS 13.060.20; 23.060.01
English version
Devices to prevent pollution by backflow of potable water -
Automatic diverter - Family H, type C
Dispositifs de protection contre la pollution de l'eau potable Sicherungseinrichtungen zum Schutz des Trinkwassers
par retour - Inverseur à retour automatique - Famille H, type gegen Verschmutzung durch Rückfließen - Automatischer
C Umsteller - Familie H, 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 14506:2005: E
worldwide for CEN national Members.

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SIST EN 14506:2005
EN 14506:2005 (E)
Contents Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .6
4 Nominal size and pressure ranges .6
5 Designation .7
6 Marking and technical documents.7
7 Symbolization.8
8 General design characteristics .9
9 Physico-chemical characteristics.9
10 Characteristics and tests .10
11 Acoustic characteristics .21
Annex A (normative) Sampling and test sequence.22

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SIST EN 14506:2005
EN 14506:2005 (E)
Foreword
This document (EN 14506:2005) 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.

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SIST EN 14506:2005
EN 14506:2005 (E)
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.
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SIST EN 14506:2005
EN 14506:2005 (E)
1 Scope
This document specifies:
a) field of application;
b) requirements for automatic diverters;
c) dimensional and the physico-chemical properties and the properties of general hydraulic, mechanical and
acoustic design of automatic diverters;
d) test method and requirements for verifying these properties. For sanitary tapware (see Clause 2) with in-
tegrated devices, the automatic diverter is only considered to be a backflow protection device if it has
passed the requirements of this document and additionally those of the applicable product standard for
the draw off tap or mixing valve;
e) marking and presentation;
f) acoustics.
This document specifies the characteristics of automatic diverters 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 at 90 °C. They are intended only for
installation with no downstream closing device.
This document is applicable to the product type indicated as follows:
i) integrated in spout (outlet);
ii) integrated in the mixing body;
iii) non-integrated (part of a set) above the maximum water level.
This document is not applicable to the product type non-integrated below the maximum water level.
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 200, Sanitary tapware — Single taps and combination taps (PN 10) - General technical specification
EN 248, Sanitary tapware — General specification for electrodeposited coatings of Ni-Cr
EN 806-1:2000, Specifications for installations inside buildings conveying water for human consumption —
Part 1: General
EN 817, Sanitary tapware — Mechanical mixers (PN 10) — General technical specifications
EN 1111, Sanitary tapware — Thermostatic mixing valves (PN 10) — General technical specification
EN 1112, Shower outlets for (PN 10) sanitary tapware
EN 1113, Showers hoses for (PN 10) sanitary tapware
EN 1286, Sanitary tapware — Low pressure mechanical mixing valves — General technical specification
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SIST EN 14506:2005
EN 14506:2005 (E)
EN 1287, Sanitary tapware — Low pressure thermostatic mixing valves — General technical specifications
EN 1717:2000, Protection against pollution of potable water in water installations and general requirements 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 3822-2, Acoustics — Laboratory tests on noise emission from appliances and equipment used in
water supply installations — Part 2: Mounting and operating conditions for draw-off taps and mixing valves
(ISO 3822-2:1995)
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 and EN 806-1:2000 and
the following apply.
automatic diverter
part of sanitary tapware capable of switching the water supply from the shower hose outlet (secondary outlet)
to the bath outlet (primary outlet) in the event of insufficient supply pressure. It incorporates the following
characteristics:
a) means of manually diverting flow to a hose outlet and of maintaining diversion as long as a positive supply
pressure is maintained;
b) automatic closure of the hose outlet with anticipation and return to air gap discharge when the supply
pressure falls below a prescribed minimum;
c) sufficient mechanical loading to maintain closure of the hose outlet in the event of a negative supply pres-
sure.
For the purpose of this document "automatic diverter HC "is hereafter referred to as "device(s)"
4 Nominal size and pressure ranges
The nominal size of non-integrated devices (DN) shall correspond to the denomination of the thread according
to Table 1.
Nominal size is not applicable to integrated devices.
For specifications of threads please see 8.2.
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EN 14506:2005 (E)
Table 1 — Nominal size vs thread size
Thread size ½ ¾
DN 15 20

The device shall be suitable for the pressure ranges specified.
5 Designation
The device is designated by:
a) name;
b) reference to this document (EN 14506);
c) family, type;
d) pressure range (HP or LP);
e) acoustic group.

EXAMPLE for a designation
Automatic diverter, EN 14506, family H, type C, HP, I
6 Marking and technical documents
6.1 Marking
6.1.1 General
In countries where the use of products made of dezincification resistant materials is not required, the
dezincification resistant products according to EN ISO 6509 as well as the products which do not contain zinc,
may be marked "DR".
In countries where the use of dezincification resistant materials is required, the dezincification resistant
products, as well as the products which do not contain zinc, shall be marked "DR".
6.1.2 Marking for integrated devices
An additional marking required for sanitary tapware shall be indicated by letters indicating family and type of
device. The marking shall be visible and permanent, i.e. moulded, engraved, etched or obtained by similar
procedures.
6.1.3 Marking for non integrated devices
The marking shall indicate:
a) name, manufacturer's brand or logo;
b) arrow indicating normal direction of flow;
c) nominal size (DN);
d) acoustic group;
e) letters indicating family and type of device.
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EN 14506:2005 (E)
Marking a), b), c), and e) are obligatory. In case there is no marking for d), the device shall be considered as
not classified acoustically.
6.2 Technical documents
Each package and/or each batch and/or each catalogue of the supplier/manufacturer shall contain technical
product information which shall be written in a commonly spoken language of the country in which the product
is sold.
It shall provide the following information:
a) designation and purpose of the product;
b) installation instructions;
c) minimum installation height;
d) (brand) name and address of the supplier/manufacturer;
e) instructions for maintenance, if any;
f) spare part list, if any.
For integrated devices, the technical documents for the sanitary fitting, shall state whether the automatic
diverter is of an anti pollution type, or whether the hose outlet of the sanitary tapware is protected by some
other means against backflow — as required by EN 1717, or, whether additional means for backflow
protection has to be installed.
7 Symbolization
The graphic representation of the device is as follows (see Figure 1):

Figure 1 — Graphic symbol
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EN 14506:2005 (E)
8 General design characteristics
8.1 Design principle
A typical design principle of HC device is given in Figure 2.

Key
1 Inlet
2 Bath
3 Shower
Figure 2 — Design principle of HC device
8.2 Connections
For devices supplied as part of a set the connection shall be as specified in the sanitary tapware standards
EN 200; EN 817; EN 1111; EN 1112; EN 1113; EN 1286; or EN 1287.
For non integrated devices the following standards shall be applicable:
ISO 7-1 or EN ISO 228-1.
9 Physico-chemical characteristics
9.1 Materials
The materials and the coatings used, liable to come normally or accidentally in contact with potable water,
shall satisfy the EU regulations concerning water quality,
The materials and the coatings shall be:
a) corrosion resistant in accordance with ISO 9227;
b) prone to the least scaling possible;
c) in conformity with the associated standards and regulations;
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d) compatible among themselves and with:
 water distributed;
 fluids or matter liable to come into contact with them;
 products normally used for desinfection operations of the network: potassium permanganate and so-
dium hypochlorite.
9.2 Nature of materials
The choice of materials is left to the discretion of the manufacturer.
a) Copper-zinc alloys containing more than 10 % zinc are subject to denzincification when submitted to
water capable of dezincification. In countries where the use of products made of dezincification resistant
materials is required, the products shall guarantee a dezincification depth less than 200 um in any
direction, they shall be tested in accordance with EN ISO 6509 and shall be marked in compliance with
the indication in Clause 6.
b) Neither the materials nor the coatings used shall, by normal or accidental contact with drinking water,
cause any risk of affecting or modifying the water up to a temperature of 90 °C. The suitability of the water
for human consumption is defined by national regulations.
c) The manufacturer shall state in his technical and sales literature the nature of the materials and the coat-
ings selected.
d) The materials, and in particular copper alloys, for which recommendations or standards exist shall comply
with the relevant recommendations o
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