SIST EN 12541:2026

SLOVENSKI STANDARD
01-junij-2026
Sanitarne armature - Tlačni splakovalni ventili in samodejno zapiralni ventili za WC
in pisoarje PN 10
Sanitary tapware - Pressure flushing valves and automatic closing urinal valves PN 10
Sanitärarmaturen - WC- und Urinaldruckspüler mit selbsttätigem Abschluss PN 10
Robinetterie sanitaire - Robinets de chasse d'eau et d'urinoirs à fermeture hydraulique
automatique PN 10
Ta slovenski standard je istoveten z: EN 12541:2026
ICS:
91.140.70 Sanitarne naprave Sanitary installations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 12541
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2026
EUROPÄISCHE NORM
ICS 91.140.70 Supersedes EN 12541:2002
English Version
Sanitary tapware - Pressure flushing valves and automatic
closing urinal valves PN 10
Robinetterie sanitaire - Robinets de chasse d'eau et Sanitärarmaturen - WC- und Urinaldruckspüler mit
d'urinoirs à fermeture hydraulique automatique PN 10 selbsttätigem Abschluss PN 10
This European Standard was approved by CEN on 2 March 2026.

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, Türkiye 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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12541:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions and abbreviated terms . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms . 8
4 Classification and designation . 8
4.1 Classification of flushing valves . 8
4.2 Classification of urinal valves . 9
4.3 Designation . 9
5 Marking . 9
6 Coating of exposed surfaces . 9
7 Dimensional characteristics . 10
7.1 General comments on drawings . 10
7.2 WC flushing valve . 10
7.2.1 General. 10
7.2.2 Side-entry WC flushing valves . 11
7.2.3 Top-entry WC flushing valves . 12
7.3 Urinal valves . 12
7.3.1 General. 12
7.3.2 Top entry urinal valve . 13
7.3.3 Side-entry urinal valves . 14
8 Leaktightness characteristics . 14
8.1 General. 14
8.2 Leaktightness tests . 14
8.2.1 Test methods . 14
8.2.2 Leaktightness of the stop valve and leaktightness of tapware upstream of the seat . 15
8.2.3 Leaktightness of tapware downstream of the seat . 15
8.3 Leaktightness tests - Summary table . 16
9 Pressure resistance characteristics . 16
9.1 General. 16
9.2 Mechanical behaviour tests. 16
9.2.1 Test methods . 16
9.2.2 Mechanical behaviour upstream of the seat with the stop valve in the closed position . 17
9.2.3 Mechanical behaviour downstream of the seat with the stop valve in the open
position . 17
9.3 Mechanical behaviour tests - Summary table . 17
10 Hydraulic and flow characteristics of WC flushing valves . 18
10.1 General. 18
10.2 Test method for WC flushing valves . 18
10.2.1 Principle . 18
10.2.2 Test apparatus . 18
10.2.3 Measurement of impact force and requirements . 22
10.2.4 Fitting the WC flushing valve . 23
10.3 Flow rate-time-volume test . 24
10.3.1 General . 24
10.3.2 Test methodology . 25
10.3.3 Test apparatus . 25
10.3.4 Test at lower dynamic pressure . 25
10.3.5 Test at upper dynamic pressure . 26
10.4 Summary of requirements . 26
10.5 Measurement of water hammer . 28
10.5.1 Test method . 28
10.5.2 Requirements . 28
11 Principle and verification of atmospheric pipe interrupters of WC flushing valves . 28
11.1 General . 28
11.2 Atmospheric pipe interrupter composition . 28
11.2.1 General . 28
11.2.2 Requirements . 28
11.2.3 Measurement method of dry part . 28
11.3 Installation conditions . 29
11.4 Verification of absence of water splashes at backflow protection . 30
11.4.1 Test method . 30
11.4.2 Requirements . 30
11.5 Verification of operation at vacuum . 30
11.5.1 General . 30
11.5.2 Test method . 31
11.5.3 Requirements . 31
12 Hydraulic or flow characteristics of urinal valves . 31
12.1 General . 31
12.2 Test method for urinal valves . 31
12.2.1 Test apparatus . 31
12.3 Requirements . 32
13 Operating force . 32
14 Mechanical endurance characteristics . 32
14.1 General . 32
14.2 WC flushing valves . 32
14.2.1 Procedure . 32
14.2.2 Minimum requirements . 33
14.3 Urinal valves . 33
14.3.1 Procedure . 33
14.3.2 Minimum requirements . 33
15 Acoustic characteristics . 33
15.1 General . 33
15.2 Procedure . 34
15.2.1 Installation conditions and valve operation . 34
15.2.2 Test method . 34
15.3 Requirements . 34
15.3.1 Expression of results . 34
15.3.2 Determination of acoustic groups . 34
Bibliography . 36

European foreword
This document (EN 12541:2026) 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 October 2026, and conflicting national standards shall
be withdrawn at the latest by October 2026.
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 12541:2002.
— the document has been technically updated;
— the classifications for flushing and urinal valves have been updated;
— the 4 l flow rate was introduced.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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, Türkiye and the
United Kingdom.
Introduction
As for possible unfavourable effects of the product to which this document applies on the quality of
water for human consumption, no information is provided by this document on possible use
restrictions of the product in any of the member states of the EU or the EFTA.
NOTE While awaiting the adoption of verifiable European criteria, attention is also drawn to existing national
regulation that can apply.
1 Scope
This document is applicable to flushing valves for WCs and valves for urinals, with automatic hydraulic
closure, intended for:
— WC pans EN 997;
— single flush urinals EN 13407;
— siphon acting urinals EN 13407.
It does not apply to no-contact detection valves.
It is intended to specify:
— marking and identification, physico-chemical, dimensional, leaktightness, pressure behaviour,
hydraulic, mechanical endurance and acoustic characteristics of flushing valves for WCs and urinals
with automatic closure;
— test methods used to verify these characteristics;
— and to determine requirements for the atmospheric interrupter which shall be an integral part of
the WC flushing valve.
It is applicable in the following pressure and temperature conditions (see Table 1):
Table 1 — Conditions of use for tapware
Urinals 0,1 MPa ≤ P ≤ 0,5 MPa
WC DN15 (1 bar ≤ P ≤ 5 bar)
WC DN20
Recommended
WC DN25 0,08 MPa ≤ P ≤ 0,25 MPa
dynamic pressure (P)
range
(0,8 bar ≤ P ≤ 2,5 bar)
WC DN32 0,08 MPa ≤ P ≤ 0,25 MPa
(0,8 bar ≤ P ≤ 2,5 bar)
Maximum static pressure 1 MPa (10 bar)
Water temperature ≤ 25 °C
NOTE Although this document limits the pressure for WC DN25 and WC DN32 valves till 0,25 MPa (2,5 bar),
some European countries have legislation and recommendations for higher pressures.
Health and quality requirements in accordance to European and national legislation for final materials
in contact with water intended for human consumption are not covered by this document.
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 248, Sanitary tapware — General specification for electrodeposited coatings of Ni-Cr
EN 997, WC pans and WC suites with integral trap
EN 13407, Wall-hung urinals — Functional requirements and test methods
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-
4)
EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads — Part 1: Dimensions,
tolerances and designation
3 Terms and definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1.1
automatic closing valve
tapware whose opening is operated by a mechanical action on the control device, and whose closure
happens automatically after a period of adjustable or non-adjustable duration
3.1.2
WC flushing valve
automatic closing valve intended to be used with WC pans and comprising an atmospheric interrupter
Note 1 to entry: This shall be in accordance with EN 997.
3.1.2.1
stop valve
valve used to stop water flow upstream of the flushing valve
Note 1 to entry: It may be integrated into the flushing valve or separate from it.
3.1.2.2
flow control equipment
manual or automatic equipment controlling the flush flow and which is an integral part of the flushing
valve or of the stop valve
Note 1 to entry: If it is part of the stop valve, this latter shall not be linked to the flushing valve by an ISO 228-1
thread.
3.1.2.3
volume control equipment
equipment used to control the volume of water delivered by a flushing valve
3.1.3
urinal valve
3.1.3.1
single flush urinal valve
valve intended for flushing single flush urinals
Note 1 to entry: This shall be in accordance with EN 13407.
3.1.3.2
siphon action urinal valve
valve intended for flushing siphon acting urinals
Note 1 to entry: This shall be in accordance with EN 13407.
3.1.3.3
stop valve
valve used to stop water supply
Note 1 to entry: It may be integrated in the urinal valve and may be used to control the flow.
3.2 Abbreviated terms
For the purposes of this document, the abbreviated terms in Table 2 apply.
Table 2 — Abbreviated terms
DESIGNATION ABBREV. UNIT DEFINITION
Nominal size DN mm Defines the hydraulic and dimensional values
of the valve
Flow rate Q l/s Volume of water supplied in the unit of time
Operating time T s Time elapsing between the start of activation
and the return to 0 of the flow rate
Volume of V l Volume of water supplied during the
water operating time
Static pressure P MPa (bar) Pressure upstream of valve in absence of
s
flow
Dynamic P MPa (bar) Pressure upstream of valve during flow
d
pressure
Water hammer ΔP MPa (bar) Overpressure occurring upstream of valve at
time of closure
Impact force F N Force produced by jet at outlet of flushing
pipe.
4 Classification and designation
4.1 Classification of flushing valves
Flushing valves are classified according to their volume class as shown in Table 3:
Table 3 — Volume class of flushing valves
Class Amount of delivered water (V)
4 4 l ≤ V < 6 l
6 6 l ≤ V < 9 l
9 9 l ≤ V < 10 l
4.2 Classification of urinal valves
Urinal valves are classified according to their “volume class” as shown in Table 4:
Table 4 — Volume class of urinal valves
Class Amount of delivered water (V)
1 V ≤ 1 l
2 1 l < V ≤ 2 l
4 2 l < V ≤ 4 l
6 4 l < V ≤ 6 l
4.3 Designation
An automatic closing flushing or urinal valve is designated by:
— type of appliance for which it is intended (WC, siphon action urinal, single flush urinals…);
— volume class (e.g. class 6, class 9, etc);
— type of control (push-button, remote control.);
— mounting method (top-entry, side-entry, flush.);
— nominal size, DN;
— connecting dimension;
— presence of an incorporated stop valve;
— acoustic group (if classified).
EXAMPLE flushing valve / for WC / Class 6 / push-button / top-entry / DN20 / G3/4 B with incorporated
stop valve / Group 1
5 Marking
Tapware complying with this document shall be marked indelibly and permanently on the appliance
with the mark or name of the manufacturer and the acoustic group, if tested.
6 Coating of exposed surfaces
Coated visible surfaces shall comply with the requirements of EN 248.
7 Dimensional characteristics
7.1 General comments on drawings
The design and construction of components without defined dimensions permits various design
solutions to be adopted by the manufacturer.
7.2 WC flushing valve
7.2.1 General
Table 5 — Threads and outlet pipe (see Figure 1 and Figure 2)
Dimensions Designation DN15 DN20 DN25 DN32
A Male thread (EN ISO 228-1) G1/2B G3/4B G1B G1 1/4B
D Female thread (EN ISO 228-1) G1/2 G1/2 G3/4 G1
G (+0/-0,5) mm Diameter of pipe connection sleeve 20 26 26 or 30 30
H Diameter of valve outlet for 22 28 28 or 32 32
(+0,2/+0,5) mm connection to pipe by compression
joint
Table 6 — Permitted thread lengths (see Figure 1 and Figure 2)
Dimension Comment G1/2B G1/2 G3/4B G3/4 G1B G1 G1
1/4B
C min Useful thread length (mm) 8 - 10 - 10 - 11
L min Male thread (mm) 11 - 13 - 15 - 19
F min Female thread (mm) - 10 - 12 - 12 -
7.2.2 Side-entry WC flushing valves

Figure 1 — Side entry WC flushing valves (see Table 5 and Table 6)
7.2.3 Top-entry WC flushing valves

Figure 2 — Top entry WC flushing valves (see Table 5 and Table 6)
7.3 Urinal valves
7.3.1 General
Table 7— Threads (see Figure 3 and Figure 4)
DIMENSIONS DESIGNATION DN15 DN20
a
A Male thread (EN ISO 228-1) G1/2B G3/4B
a
D Female thread (EN ISO 228-1) G1/2 G1/2
C min Useful thread length 8 10
L min Male thread 11 13
F min Female thread 10 12
a
If the urinal connecting pipe is supplied with the valve, dimensions A and D are not mandatory at the outlet.
7.3.2 Top entry urinal valve
Figure 3 — Top-entry urinal valve (see Table 7)
7.3.3 Side-entry urinal valves

Figure 4 — Side -entry urinal valve (see Table 7)
NOTE Where the outlet and inlet are different, the nominal size is that of the inlet and the outlet diameter will
be shown (e.g.: top-entry urinal valve G1/2 male with female outlet G3/4H).
8 Leaktightness characteristics
8.1 General
The tests described below are type tests (laboratory tests) and not quality control tests carried out
during manufacture. They are carried out in water whose temperature is less than or equal to 25 °C.
This clause specifies test methods for verifying the leaktightness of the tapware unit and gives the
corresponding spec
...