WC pans and WC suites with integral trap

This European Standard specifies constructional and performance requirements together with test methods for close-coupled suites, one-piece and independent WC pans with integral trap used for personal hygiene manufactured from glazed ceramics or stainless steel.
This European Standard does not apply to squatting toilets, WC pans without integral trap or flushing cisterns as separate appliances.
In the case of independent WC pans, the associated flushing cisterns and pressure valves are covered by other standards and the reference to cisterns in this standard is related only to the definition and requirements of flushing volume.
In the case of close-coupled suites and one-piece WCs, this standard also specifies design, performance requirements and the test methods for designated flushing cisterns with flushing mechanisms, inlet valves and overflows. For these products, this standard covers flushing cisterns designed to be connected to drinking water installations inside buildings.
Before installation of WCs, EN 12056-2 and national requirements need to be taken into consideration.

WC-Becken und WC-Anlagen mit angeformtem Geruchverschluss

Diese Europäische Norm legt die konstruktiven und funktionellen Anforderungen und Prüfverfahren für WC Kombinationen, Einstück WCs und WC Becken mit freiem Zulauf mit angeformtem Geruchverschluss zur persönlichen Hygiene, hergestellt aus Sanitärkeramik oder nichtrostendem Stahl, fest.
Diese Europäische Norm gilt nicht für Hock WCs, WC Becken ohne angeformten Geruchverschluss sowie Spülkästen als Einzelgegenstände.
Für WC Becken mit freiem Zulauf werden die zugehörigen Spülkästen und Druckspüler durch andere Normen abgedeckt. Der Verweis auf Spülkästen in dieser Norm gilt nur für die Definitionen und die Anforderungen an das Spülvolumen.
Für WC Kombinationen und Einstück WCs legt diese Norm zudem Konstruktions  und Leistungs-anforderungen und Prüfverfahren für die zugeordneten Spülkästen mit Spülmechanismus, Füllventil und Überlauf fest. Dabei gilt diese Norm für Spülkästen, die für den Anschluss an die Trinkwasser Installation in Gebäuden ausgelegt sind.
Vor dem Einbau von WCs müssen EN 12056-2 und nationale Bestimmungen berücksichtigt werden.

Cuvettes de WC et cuvettes à réservoir attenant à siphon intégré

La présente norme spécifie les caractéristiques relatives à la construction et aux performances, ainsi que les méthodes d’essai des cuvettes de WC indépendantes, monobloc et à réservoir attenant, à siphon intégré, en céramique émaillée ou en acier inoxydable, utilisées pour l’hygiène personnelle.
La présente norme ne s’applique pas aux sièges à la turque, aux cuvettes de WC sans siphon intégré, ni aux réservoirs de chasse seuls.
Pour les cuvettes indépendantes, les réservoirs et robinets de chasse associés sont traités dans d’autres normes. La référence aux réservoirs dans la présente norme ne concerne que la définition et des prescriptions relatives au volume de chasse.
Pour les cuvettes à réservoir attenant et les cuvettes monobloc, la présente norme spécifie également les caractéristiques relatives à la conception et aux performances, ainsi que les méthodes d’essai applicables aux réservoirs de chasse associés équipés d’un mécanisme de chasse, d’un robinet d’alimentation et d’un trop-plein. Pour ces produits, la présente norme traite des réservoirs de chasse conçus pour être raccordés aux réseaux d’eau potable à l’intérieur des bâtiments.
Avant l’installation de WC, l’EN 12056-2 et les prescriptions nationales doivent être prises en compte.

Straniščne školjke in straniščna oprema z integriranim sifonom

Ta evropski standard določa konstrukcijske zahteve in zahteve v zvezi z delovanjem ter preskusne metode za prigrajene naprave, enodelne in samostojne straniščne školjke z integriranim sifonom za osebno higieno, proizvedene iz glazirane keramike ali nerjavnega jekla.
Ta evropski standard se ne uporablja za čepeča stranišča, straniščne školjke brez integriranega sifona ali izplakovalnike kot ločene naprave.
V primeru samostojnih straniščnih školjk so povezani izplakovalniki in tlačni ventili zajeti v drugih standardih, pri čemer je sklicevanje na izplakovalnike v tem standardu povezano samo z opredelitvijo in zahtevami prostornine za izplakovalno vodo.
Ta standard za prigrajene naprave in enodelne straniščne školjke določa tudi zasnovo, zahteve glede zmogljivosti in preskusne metode za določene izplakovalnike z mehanizmi za izplakovanje, dovodnimi ventili ter prelivi. V zvezi s temi izdelki so v tem standardu obravnavani izplakovalniki, ki so namenjeni priključitvi na napeljave za pitno vodo v stavbah.
Pred vgradnjo straniščnih školjk ali naprav je treba upoštevati standard EN 12056 2 in nacionalne zahteve.

General Information

Status
Published
Publication Date
09-Oct-2018
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
10-Oct-2018
Completion Date
10-Oct-2018

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SLOVENSKI STANDARD
SIST EN 997:2018
01-december-2018
1DGRPHãþD
SIST EN 997:2012+A1:2015
6WUDQLãþQHãNROMNHLQVWUDQLãþQDRSUHPD]LQWHJULUDQLPVLIRQRP
WC pans and WC suites with integral trap
WC-Becken und WC-Anlagen mit angeformtem Geruchverschluss
Cuvettes de WC et cuvettes à réservoir attenant à siphon intégré
Ta slovenski standard je istoveten z: EN 997:2018
ICS:
91.140.70 Sanitarne naprave Sanitary installations
SIST EN 997:2018 en,fr,de

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

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SIST EN 997:2018
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SIST EN 997:2018
EN 997
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2018
EUROPÄISCHE NORM
ICS 91.140.70 Supersedes EN 997:2012+A1:2015
English Version
WC pans and WC suites with integral trap

Cuvettes de WC et cuvettes à réservoir attenant à WC-Becken und WC-Anlagen mit angeformtem

siphon intégré Geruchverschluss
This European Standard was approved by CEN on 14 April 2018.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 997:2018 E

worldwide for CEN national Members.
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SIST EN 997:2018
EN 997:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 6

3 Terms and definitions ................................................................................................................................... 6

4 Classification .................................................................................................................................................. 11

5 Functional characteristics and test methods for type 1 products .............................................. 11

5.1 Depth of water seal ...................................................................................................................................... 11

5.2 Flushing characteristics ............................................................................................................................. 11

5.2.1 General ............................................................................................................................................................. 11

5.2.2 Wash of bowl .................................................................................................................................................. 11

5.2.3 Flushing of toilet paper .............................................................................................................................. 12

5.2.4 Flushing of fifty small plastic balls ......................................................................................................... 12

5.2.5 Oversplashing ................................................................................................................................................ 12

5.2.6 After-flush volume ....................................................................................................................................... 12

5.3 Water absorption ......................................................................................................................................... 12

5.4 Static load ........................................................................................................................................................ 12

5.5 Additional characteristics of flushing cisterns for close-coupled suites and one-piece

WCs .................................................................................................................................................................... 12

5.5.1 General ............................................................................................................................................................. 12

5.5.2 Inlet valve of the flushing cistern ........................................................................................................... 12

5.5.3 Supply piping ................................................................................................................................................. 12

5.5.4 Flush volume(s) of the flushing cistern ................................................................................................ 13

5.5.5 Leak-tightness between flushing cistern and bowl ......................................................................... 13

5.5.6 Outlet valve leak-tightness ....................................................................................................................... 13

5.5.7 Outlet valve reliability ................................................................................................................................ 13

5.5.8 Overflow .......................................................................................................................................................... 13

5.5.9 Safety margin – dimension “c” ................................................................................................................. 14

5.5.10 Safety margin – dimension “a” ................................................................................................................. 15

5.6 Durability ........................................................................................................................................................ 15

5.7 Test methods ................................................................................................................................................. 15

5.7.1 Depth of water seal ...................................................................................................................................... 15

5.7.2 Flushing tests ................................................................................................................................................. 15

5.7.3 Determination of water absorption ...................................................................................................... 18

5.7.4 Load test .......................................................................................................................................................... 19

5.7.5 Tests for flushing cisterns of close-coupled suites and one-piece WCs .................................... 20

5.8 Sub-types of independent WC pans, close-coupled suites and one-piece WCs ...................... 23

5.8.1 Nominal flush volume ................................................................................................................................. 23

5.8.2 Flushing devices ........................................................................................................................................... 23

5.8.3 Verification of sub-types ............................................................................................................................ 24

6 Functional characteristics and test methods for type 2 products .............................................. 24

6.1 Inlet valve ........................................................................................................................................................ 24

6.2 Backflow prevention ................................................................................................................................... 24

6.3 Marking of flushing cistern ....................................................................................................................... 24

6.4 Warning pipe and overflow provision .................................................................................................. 24

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SIST EN 997:2018
EN 997:2018 (E)

6.5 Flush volume .................................................................................................................................................. 25

6.5.1 Full flush .......................................................................................................................................................... 25

6.5.2 Reduced flush ................................................................................................................................................. 25

6.6 Flush rate ......................................................................................................................................................... 25

6.7 Physical endurance and leakage of flushing device ......................................................................... 25

6.8 Chemical endurance of flushing device ................................................................................................ 25

6.9 Solids discharge and after-flush volume for maximum flush ....................................................... 25

6.10 Paper discharge for reduced-flush volume ......................................................................................... 25

6.11 Liquid contaminant dye retention.......................................................................................................... 25

6.12 Wash of bowl .................................................................................................................................................. 26

6.13 Depth of water seal ...................................................................................................................................... 26

6.14 Static load of type 2 products ................................................................................................................... 26

6.15 Water absorption .......................................................................................................................................... 26

6.16 Durability of type 2 products ................................................................................................................... 26

6.17 Test methods .................................................................................................................................................. 26

6.17.1 Inlet valve tests .............................................................................................................................................. 26

6.17.2 Warning pipe and overflow provisions ................................................................................................ 26

6.17.3 Flush volume and water trap seal tests ................................................................................................ 27

6.17.4 Flush rate test ................................................................................................................................................ 27

6.17.5 Physical endurance and leakage test of flushing device ................................................................ 29

6.17.6 Chemical endurance test of flushing device ........................................................................................ 30

6.17.7 Solids discharge and after-flush volume for maximum flush volume test............................... 30

6.17.8 Paper discharge for reduced-flush volume test ................................................................................ 31

6.17.9 Liquid contaminant dye retention test ................................................................................................. 32

6.17.10 Wash of bowl .......................................................................................................................................... 33

6.17.11 Summary of requirements for compatibility testing of type 2 products ......................... 33

7 Dangerous substances ................................................................................................................................ 34

8 Marking ............................................................................................................................................................ 34

9 Assessment and verification of constancy of performance – AVCP ............................................ 37

9.1 General ............................................................................................................................................................. 37

9.2 Type testing .................................................................................................................................................... 37

9.2.1 General ............................................................................................................................................................. 37

9.2.2 Test samples, testing and compliance criteria ................................................................................... 38

9.3 Factory production control (FPC) ........................................................................................................... 39

9.3.1 General ............................................................................................................................................................. 39

9.3.2 Equipment ....................................................................................................................................................... 40

9.3.3 Raw materials and components .............................................................................................................. 40

9.3.4 Product testing and assessment .............................................................................................................. 40

9.3.5 Non-complying products ............................................................................................................................ 40

9.3.6 Corrective action ........................................................................................................................................... 40

Annex A (normative) Valve-type test flushing cistern ................................................................................. 41

A.1 Valve-type test flushing cistern (Figures A.1 to A.3) ........................................................................ 41

A.2 Calibration of the valve-type test flushing cistern ............................................................................ 43

A.3 Procedure to test the flush rate of the test flushing cistern .......................................................... 43

A.4 Procedure to test the flushing requirements of the WC ................................................................. 44

A.5 Procedure to measure the impact force of the test flushing cistern .......................................... 44

A.5.1 General ............................................................................................................................................................. 44

A.5.2 Test device ...................................................................................................................................................... 44

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SIST EN 997:2018
EN 997:2018 (E)

A.5.3 Procedure for calibrating the load cell unit and the measurement amplifier ....................... 46

A.5.4 Measurement procedure ........................................................................................................................... 46

A.5.5 Calculation procedure for fixed time frame 0,35 s to 0,5 s ........................................................... 47

A.5.6 Calculation procedure for maximum impact force .......................................................................... 47

Annex B (normative) Test rig for test pressure flush valve ....................................................................... 48

B.1 Test rig (Figure B.1) .................................................................................................................................... 48

B.2 Procedure to measure the impact force ............................................................................................... 49

Annex C (normative) Test rig for after-flush volume test ........................................................................... 51

C.1 Test rig for after-flush volume test for independent WC pans (Figures C.1 and C.2) .......... 51

C.2 Test rig for after-flush volume test for one-piece WC pans, close-coupled suites and

WC suites (Figure C.3)................................................................................................................................. 52

Annex D (normative) Basket method ................................................................................................................. 53

Annex E (normative) Preparation of test specimens ................................................................................... 54

Annex F (normative) Examples of flush pipes and outlet valves for test flushing cisterns ............ 57

Annex ZA (informative) Relationship of this European Standard with Regulation (EU)

No.305/2011 .................................................................................................................................................. 61

Bibliography ................................................................................................................................................................. 64

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SIST EN 997:2018
EN 997:2018 (E)
European foreword

This document (EN 997:2018) has been prepared by Technical Committee CEN/TC 163 “Sanitary

appliances”, the secretariat of which is held by UNI.

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 April 2019 and conflicting national standards shall be

withdrawn at the latest by July 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 997:2012+A1:2015.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.

For relationship with EU Construction Products Regulation, see informative Annex ZA, which is an

integral part of this document.

This standard is one of a series of standards for sanitary appliances. Supporting standards are those for

flushing devices and connecting dimensions.
The main changes introduced in EN 997:2012+A1:2015 were the following:

a) introduction of a new Annex ZA in accordance with the latest template (in the format of TF N 687

rev1 of 2015-06-02);
b) modification of the marking of products;

c) editorial modifications as agreed between representatives of EU/DG Growth, CEN/TC 163 and

FECS on 2016-07-07 in Brussels for citation of standard in OJEU.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
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SIST EN 997:2018
EN 997:2018 (E)
1 Scope

This European Standard specifies constructional and performance characteristics together with test

methods for close-coupled suites, one-piece and independent WC pans with integral trap used for

personal hygiene manufactured from glazed ceramics or stainless steel.

This European Standard does not apply to squatting toilets, WC pans without integral trap or flushing

cisterns as separate appliances.

In the case of independent WC pans, the associated flushing cisterns and pressure valves are covered by

other standards and the reference to cisterns in this standard is related only to the definition and

requirements of flushing volume.

In the case of close-coupled suites and one-piece WCs, this standard also specifies design, performance

characteristics and the test methods for designated flushing cisterns with flushing mechanisms, inlet

valves and overflows. For these products, this standard covers flushing cisterns designed to be

connected to drinking water installations inside buildings.

Before installation of WCs, EN 12056-2 and national requirements need to be taken into consideration.

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 1717, Protection against pollution of potable water in water installations and general requirements of

devices to prevent pollution by backflow

EN 12056-2, Gravity drainage systems inside buildings - Part 2: Sanitary pipework, layout and calculation

EN 14124, Inlet valves for flushing cisterns with internal overflow
AS 1172-1, Water closets (WC) - Pans

BS 1212-2:1990, Float operated valves. Specification for diaphragm type float operated valves (copper

alloy body) (excluding floats)

BS 1212-3:1990, Float operated valves. Specification for diaphragm type float operated valves (plastics

bodied) for cold water services only (excluding floats)

BS 1212-4:2016, Float operated valves. Specification for compact type float operated valves for WC

flushing cisterns (including floats)
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 http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
Note 1 to entry: Drawings are diagrammatic only.
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SIST EN 997:2018
EN 997:2018 (E)
3.1
glazed ceramic
ceramic material for sanitary appliances with all visible surfaces glazed when
installed
3.2
WC pan
bowl-shaped appliance for reception and flushing away of human solid and liquid
excrement
3.3
pedestal WC pan
floor-mounted WC pan that has an integral foot
3.4
wall-hung WC pan
WC pan cantilevered clear of the floor
3.5
back-to-wall WC pan
pedestal WC pan whose back is in contact with the wall
3.6
wash-out WC pan
WC pan in which excrement falls first into a shallow water filled bowl, before
being removed by the flushing water
3.7
wash-down WC pan
WC pan in which excrement falls directly into the trap before being removed by
the flushing water
3.8
siphonic WC pan
WC pan in which excrement is removed by siphonage induced by the flushing
water
3.9
close-coupled suite
combination of a WC pan and flushing cistern directly coupled into a functional
unit
3.10
one-piece WC pan
WC pan manufactured with an integral flushing cistern
3.11
independent WC pan
WC pan suitable for the connection with a flushing cistern or a pressure flush
valve
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SIST EN 997:2018
EN 997:2018 (E)
3.12
WC suite
WC pan combined with either a flushing cistern with integral warning pipe

connection – or a device deemed to be a no less effective device – and inlet/outlet

devices, or a pressure flush valve, with WC and flushing device installed as a
functioning unit
3.13
children WC pan
WC pan with a front edge between 300 mm and 380 mm high
3.14
baby WC pan
WC pan with a front edge below 260 mm high
3.15
flushing device

device fitted to a cistern to provide controlled measured volume(s) of water to a

WC pan or suite for flushing

Note 1 to entry: A flushing device can be a siphon, drop valve, flap valve or pressurized

cistern, etc. For the purposes of this standard, the flushing device includes the activator

(e.g. handle, button, linkages etc.) and all seals, pistons, or other integral components.

3.16
valve-type flushing cistern

cistern with integral valve outlet device for the storage and discharge of a defined

volume(s) of flushing water for the removal of excrement from a WC pan
3.17
pressure flush valve
valve directly connected to the water supply which delivers a pre-determined
volume of flushing water for the removal of excrement from a WC pan
3.18
water trap
water seal that prevents backflow of foul odour from a drain
3.19
inlet valve

valve that controls and shuts off the flow of water into a flushing cistern, usually

by an arm connected to a float
3.20
outlet valve
mechanism for opening and closing the outlet orifice of the flushing cistern
3.21
flush pipe
connecting pipe between a flushing cistern’s outlet and a WC’s inlet
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SIST EN 997:2018
EN 997:2018 (E)
3.22
overflow
device enabling release of excess water from a flushing cistern when water
reaches a pre-determined level
3.23
overflow level
water level corresponding to the upper edge of the overflow or to the lower edge
of the overflow notch
3.24
flush volume
volume of water discharged from the flushing device during a flush cycle
3.25
after-flush volume

volume of flush water remaining after the last test specimen has left the outlet of

the bowl
3.26
warning level

level of spill over of a vertically mounted warning pipe connection or the invert of

a horizontally mounted warning pipe connection, or the level at which an equally
effective (warning) device would operate
3.27
meniscus level
level resulting from surface tension of water during overflowing
3.28
nominal water level

water level when a cistern is filled to the nominal flush volume, e.g. 4 l, 5 l, 6 l, 7 l

or 9 l
3.29
nominal flush volume

volume of water indicated, when a flushing cistern is filled to the nominal water

level
3.30
maximum water level
highest water level reached after flow stabilization, in the event of continuous
supply, as a result of malfunction of the inlet valve
3.31
critical water level

highest water level in any part of the appliance, 2 s after the supply is cut-off

3.32
residual water level
water level, after a full flush is completed
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SIST EN 997:2018
EN 997:2018 (E)
3.33
adjustable residual water level
residual water level in a cistern, after (uninterrupted) flushing, which can be
altered by adjusting the outlet mechanism
3.34
short-term leak test
leak test consisting of a 15 min wait after flushing then positioning paper
designed to change colour when wet, under the flushing device for 10 min

Note 1 to entry: A leak is defined as being visible discharge of water amounting to more

than three separate drops.
3.35
long-term leak test

leak test consisting of a 2 h wait after flushing then positioning paper designed to

change colour when wet, under the outlet for 15 min

Note 1 to entry: A leak is defined as being visible discharge of water amounting to more

than three separate drops.
3.36
safety margin — dimension c
distance between the nominal water level determined by the manufacturer, and
the overflow level
3.37
impact force
force of the flushing water at the outlet of the flush pipe
3.38
test height
distance between the seat of the flushing device and the horizontal axis of the
flush pipe
3.39
flush rate
volume of water flowing out of a flushing cistern as a function of time
3.40
product type

set of representative performance levels or classes of a construction product, in

relation to its essenti
...

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