Sanitary tapware - General specifications for aerators

This document specifies:
- the dimensional, mechanical, hydraulic and acoustic characteristics with which sanitary tapware aerators (with and without flow regulation) should comply;
- the procedures for testing these characteristics.
This document is applicable to:
- Sanitary tapware aerators intended to be mounted on tapware used with sanitary appliances in toilets, bathrooms and kitchens (e.g. single taps, combination tap assemblies, mechanical mixing valves, thermostatic mixing valves);
- Sanitary tapware aerators used under the following pressure and temperature conditions (see Table 1).
[Table 1: Conditions for the use of aerators]
NOTE 1   Sanitary tapware aerators can only be connected downstream of the obturator of the sanitary tapware product.
NOTE 2   For the purposes of brevity, sanitary tapware aerators will be detailed only as aerators in the rest of this document.
NOTE 3   The tests described in this document are type tests (laboratory tests) and not quality control tests carried out during manufacture.
NOTE 4   Aerator swivels are to be tested in combination with a specific aerator only and are therefore considered to be sanitary tapware accessories. (Testing of the stand-alone swivels is therefore not covered by the scope of this document. Where swivels are used they are considered to be part of the tapware constructions, e.g. for bidet taps).

Sanitärarmaturen - Allgemeine Anforderungen an Strahlregler

Dieses Dokument legt Folgendes fest:
—   die maßlichen, hydraulischen und mechanischen Anforderungen sowie die Anforderungen an das Geräuschverhalten von Strahlreglern von Sanitärarmaturen (mit und ohne Mengenregulierung);
—   die Prüfverfahren, um diese Anforderungen zu überprüfen.
Dieses Dokument ist anwendbar auf:
—   Strahlregler von Sanitärarmaturen für den Anschluss an Armaturen, die mit Sanitärausstattungsgegenständen in Toiletten, Badezimmern und Küchen verwendet werden (z. B. Auslaufventile, Mischbatterien, Mischer, thermostatische Mischer);
—   Strahlregler von Sanitärarmaturen, die unter den folgenden Druck  und Temperaturbedingungen eingesetzt werden (siehe Tabelle 1).
Tabelle 1 — Anwendungsbedingungen für Strahlregler
   Grenzwerte für die Anwendung   Empfohlene Grenzwerte für eine einwandfreie Funktion
Fließdruck   0,05 MPa ≤ P ≤ 0,5 MPa   0,1 MPa ≤ P ≤ 0,5 MPa
   (0,5 bar ≤ P ≤ 5 bar)   (1 bar ≤ P ≤ 5 bar)
Temperatur   ≤ 70 °C   ≤ 65 °C
ANMERKUNG 1   Strahlregler von Sanitärarmaturen können nur hinter dem Absperrorgan der Sanitärarmatur angeschlossen werden.
ANMERKUNG 2   Der Kürze halber werden Strahlregler von Sanitärarmaturen im Rest dieses Dokuments lediglich als Strahlregler aufgeführt.
ANMERKUNG 3   Die in diesem Dokument beschriebenen Prüfungen sind Typ-Anerkennungsprüfungen (im Laboratorium) und nicht für die Fertigungskontrolle vorgesehen.
ANMERKUNG 4   Strahlreglergelenke sind ausschließlich zusammen mit einem spezifischen Strahlregler zu prüfen und daher als Zubehörteile für Sanitärarmaturen anzusehen. (Die Prüfung eigenständiger Gelenke liegt daher außerhalb des Anwendungsbereichs dieses Dokuments. Wenn Gelenke verwendet werden, werden sie als Teil der Armaturkontruktionen betrachtet, z. B. für Bidetarmaturen).

Robinetterie sanitaire - Spécifications générales pour les aérateurs

Le présent document spécifie :
- les caractéristiques dimensionnelles, mécaniques, hydrauliques et acoustiques auxquelles il convient que les aérateurs de robinetterie sanitaire (avec et sans régulation du débit) répondent ;
- les modes opératoires d’essai permettant de contrôler ces caractéristiques.
Le présent document est applicable :
- aux aérateurs de robinetterie sanitaire destinés à être montés sur les robinetteries équipant les appareils sanitaires installés dans les toilettes, les salles de bains et les cuisines (par exemple robinets simples, mélangeurs, mitigeurs mécaniques, mitigeurs thermostatiques) ;
- aux aérateurs de robinetterie sanitaire utilisés dans les conditions de pression et de température suivantes (voir le Tableau 1).
[Tableau 1 — Conditions d’utilisation des aérateurs]
NOTE 1   Ces aérateurs de robinetterie sanitaire doivent être connectés seulement à l’aval de l’obturateur du produit de robinetterie sanitaire.
NOTE 2   Pour alléger le texte, les aérateurs de robinetterie sanitaire seront simplement appelés « aérateurs » dans le reste du présent document.
NOTE 3   Les essais décrits dans le présent document sont des essais de type (essais en laboratoire) et non des essais de contrôle qualité effectués en cours de fabrication.
NOTE 4   Les joints articulés d’aérateurs doivent être soumis à l’essai uniquement avec un aérateur spécifique et ils sont donc considérés comme des accessoires de robinetterie sanitaire. (L’essai des joints articulés seuls n’est donc pas couvert par le domaine d’application du présent document. Lorsque des joints articulés sont utilisés, ils sont considérés comme faisant partie des constructions de robinetterie, par exemple pour les robinets de bidets).

Sanitarne armature - Splošne specifikacije za regulatorje pretoka

General Information

Status
Published
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
17-Nov-2021
Completion Date
17-Nov-2021

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SLOVENSKI STANDARD
oSIST prEN 246:2020
01-september-2020
Sanitarne armature - Splošne specifikacije za regulatorje pretoka
Sanitary tapware - General specifications for aerators
Sanitärarmaturen - Allgemeine Anforderungen an Strahlregler
Robinetterie sanitaire - Spécifications générales pour les aérateurs
Ta slovenski standard je istoveten z: prEN 246
ICS:
91.140.70 Sanitarne naprave Sanitary installations
oSIST prEN 246:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 246:2020
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oSIST prEN 246:2020
DRAFT
EUROPEAN STANDARD
prEN 246
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2020
ICS 91.140.70 Will supersede EN 246:2003
English Version
Sanitary tapware - General specifications for aerators

Robinetterie sanitaire - Spécifications générales pour Sanitärarmaturen - Allgemeine Anforderungen an

les aérateurs Strahlregler

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, 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.

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: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 246:2020 E

worldwide for CEN national Members.
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oSIST prEN 246:2020
prEN 246:2020 (E)
Contents Page

European foreword ...................................................................................................................................................... 3

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Terms and definitions ................................................................................................................................... 5

4 Designation ....................................................................................................................................................... 5

5 Marking – Identification ............................................................................................................................... 6

6 Materials ............................................................................................................................................................ 6

6.1 Chemical and hygiene requirements ....................................................................................................... 6

6.2 Exposed surface conditions ......................................................................................................................... 6

7 Dimensions........................................................................................................................................................ 6

7.1 Aerators with female thread ....................................................................................................................... 6

7.2 Aerators with male thread .......................................................................................................................... 7

7.3 Special cases ..................................................................................................................................................... 7

8 Test sequence ................................................................................................................................................... 8

9 Assembly ............................................................................................................................................................ 9

10 Performance of Aerators without integrated flow regulators ..................................................... 11

10.1 Hydraulic Characteristics .......................................................................................................................... 11

10.2 Mechanical performance under high temperature .......................................................................... 11

10.3 Acoustic characteristics for aerators without integrated flow regulators .............................. 12

11 Performance of aerators with integrated flow regulators ............................................................. 13

11.1 Hydraulic characteristics ........................................................................................................................... 13

11.2 Endurance test for aerators with integrated flow regulators....................................................... 15

12 Pressure resistance – housing with plastic threads ......................................................................... 16

12.1 General.............................................................................................................................................................. 16

12.2 Test method .................................................................................................................................................... 16

12.3 Requirements ................................................................................................................................................. 16

Annex A (informative) Dimensions for the mounting of aerators on nozzle outlets of sanitary

tapware ............................................................................................................................................................. 17

Bibliography ................................................................................................................................................................. 19

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oSIST prEN 246:2020
prEN 246:2020 (E)
European foreword

This document (prEN 246:2020) 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 246:2003.

In comparison with the previous edition, the following technical modifications have been made:

— Update to Table 2 (dimensions);
— Update to Table 3 (dimensions);
— Addition of new Clause 8 – Test sequence;

— Addition of new Clause 11 – Performance of aerators with integrated flow regulators.

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oSIST prEN 246:2020
prEN 246:2020 (E)
1 Scope
This document specifies:

— the dimensional, mechanical, hydraulic and acoustic characteristics with which sanitary tapware

aerators (with and without flow regulation) should comply;
— the procedures for testing these characteristics.
This document is applicable to:

— Sanitary tapware aerators intended to be mounted on tapware used with sanitary appliances in

toilets, bathrooms and kitchens (e.g. single taps, combination tap assemblies, mechanical mixing

valves, thermostatic mixing valves);

— Sanitary tapware aerators used under the following pressure and temperature conditions (see

Table 1).
Table 1 — Conditions for the use of aerators
Limits of use Recommended limits for
correct operation
Dynamic Pressure 0,05 MPa ≤ P ≤ 0,5 MPa 0,1 MPa ≤ P ≤ 0,5 MPa
(0,5 bar ≤ P ≤ 5 bar) (1 bar ≤ P ≤ 5 bar)
Temperature ≤ 70 °C ≤ 65 °C

Note 1: Sanitary tapware aerators can only be connected downstream of the obturator of the sanitary tapware

product.

Note 2: For the purposes of brevity, sanitary tapware aerators will be detailed only as aerators in the rest of this

document.

Note 3: The tests described in this document are type tests (laboratory tests) and not quality control tests carried

out during manufacture.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, 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 for water supply systems of type 1 and type

2 — General technical specification

EN 248, Sanitary tapware — General specification for electrodeposited coatings of Ni-Cr

EN 817, Sanitary tapware — Mechanical mixing valves (PN 10) — General technical specifications

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)

EN ISO 3822-4, Acoustics — Laboratory tests on noise emission from appliances and equipment used in

water supply installations — Part 4: Mounting and operating conditions for special appliances (ISO 3822-

ISO 49, Malleable cast iron fittings threaded to ISO 7-1
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oSIST prEN 246:2020
prEN 246:2020 (E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
sanitary tapware aerator

device which is fitted at the outlet of a sanitary tapware product to impact the flow rate and stream

appearance of the water stream

Note 1 to entry: A distinction is made between stream appearance: a) aerators without air intake (known as

“laminar” stream), b) aerators with air intake and c) spray models (numerous single jets).

Note 2 to entry: Aerator swivels are to be tested in combination with a specific aerator only and are therefore

considered to be sanitary tapware accessories. (Testing of the stand-alone swivels is therefore not covered by the

scope of this document. Where swivels are used they are considered to be part of the tapware constructions, e.g.

for bidet taps).
3.2
aerators with integrated flow regulators

An aerator that incorporates an integral flow regulator – fitted to the outlet of a sanitary tapware

product to impact the stream appearance of the water stream and additionally controlling the flow rate

within specified limits independent from the supply pressure (see tolerances in 11.1.3)

3.3
flow regulator
A device fitted to sanitary tapware to regulate the flow rate

Note to entry The key function is to achieve a flow rate – within specified limits, independent from the supply

pressure
4 Designation
An aerator is designated by:
— its type (with/without air intake);
— its thread dimension;
— its acoustic group (where applicable);

— flow rate (either ISO classification (ISO 3822-4) or the nominal flow rate for aerators with integrated

flow regulators or stand-alone flow regulators;
— reference to this document.
Examples of designation:
Aerator, with female thread: M22x1; I; A – EN 246 (cf. Figure 1 and Table 2)

Aerator laminar, with male thread: M24x1; I; A – EN 246 (cf. Figure 2 and Table 3)

Aerator, with male thread: M22x1; 6 l/min – EN 246
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oSIST prEN 246:2020
prEN 246:2020 (E)
5 Marking – Identification

Aerators complying with this document shall be marked (on the insert or the housing) by any means to

allow for identification e.g. embossing, colour coding, number coding etc. Aerators should be marked

with:
— the mark or name or trade name of the manufacturer;
— the acoustic group (if applicable);
— coding, number coding or any appropriate combination of methods etc.).
6 Materials
6.1 Chemical and hygiene requirements

All materials coming into contact with water intended for human consumption shall present no risk to

health.

They shall not cause any change of the drinking water in terms of quality, appearance, smell or taste.

6.2 Exposed surface conditions

Visible chromium plated surfaces and Ni-Cr coatings shall comply with the requirements of EN 248.

7 Dimensions
7.1 Aerators with female thread
Figure 1 — Aerators with female thread
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oSIST prEN 246:2020
prEN 246:2020 (E)
Table 2 — Dimensions for aerator with female thread
Symbol Values (mm)
M M22x1 – 6H
X 14 ≤ X ≤ 17
T 3,5 ≤ T ≤ 4,3
Y ≥ 4,5
J ≥ 2,0
7.2 Aerators with male thread
Figure 2 —Aerators with male thread
Table 3 — Dimensions for aerators with male thread
Symbol Values (mm)
M M24x1 – 6g M28x1 – 6g
X 14 ≤ X ≤ 17 15 ≤ X ≤ 19
T 4,5 ± 0,1 7 ±
...

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