WC pans and WC suites with integral trap

This 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 vitreous china or stainless steel.
This standard does not apply to squatting toilettes, WC pans without integral trap, flushing cisterns as separate appliances.
Flushing cisterns are covered by other standards and the reference to cisterns in this standard is related only to the definition and requirements of flushing volume.

WC-Becken und WC-Anlagen mit angeformtem Geruchverschluss

Diese 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 Norm gilt nicht für Hock-WCs, WC-Becken ohne angeformten Geruchverschluss sowie Spülkästen als Einzelgegenstände.
Spülkästen werden durch andere Normen abgedeckt. Der Verweis auf Spülkästen in dieser Norm gilt nur für die Begriffe und die Anforderung an das Spülvolumen.

Cuvettes de WC et cuvettes a réservoir attenant a siphon intégré

La présente Norme européenne spécifie les prescriptions relatives a la construction et aux performances, ainsi qu'aux méthodes d'essai des cuvettes de WC indépendantes, monobloc et a réservoir attenant, a siphon intégré, en céramique émaillée ou en acier inoxydable, utilisées pour l'hygiene personnelle.
La présente norme ne s'applique pas aux sieges a la turque, aux cuvettes de WC sans siphon intégré, ni aux réservoirs de chasse seuls.
Les réservoirs de chasse sont traités dans d'autres normes ; dans la présente norme, il est uniquement fait référence aux réservoirs dans le cadre de la définition et des prescriptions relatives au volume de chasse.

WC školjke in WC naprave z integriranim sifonom

General Information

Status
Withdrawn
Publication Date
30-Apr-2004
Withdrawal Date
22-Mar-2012
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
22-Mar-2012
Due Date
14-Apr-2012
Completion Date
23-Mar-2012

RELATIONS

Effective Date
01-May-2004

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SLOVENSKI STANDARD
SIST EN 997:2004
01-maj-2004
1DGRPHãþD
SIST EN 997:2000
WC školjke in WC naprave z integriranim sifonom
WC pans and WC suites with integral trap
WC-Becken und WC-Anlagen mit angeformtem Geruchverschluss
Cuvettes de WC et cuvettes a réservoir attenant a siphon intégré
Ta slovenski standard je istoveten z: EN 997:2003
ICS:
91.140.70
SIST EN 997:2004 en

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

---------------------- Page: 1 ----------------------
EUROPEAN STANDARD
EN 997
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2003
ICS 91.140.70 Supersedes EN 997:1999
English version
WC pans and WC suites with integral trap

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

intégré Geruchverschluss
This European Standard was approved by CEN on 2 July 2003.

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 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 Management Centre has the same status as the official

versions.

CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,

Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, 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

© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 997:2003 E

worldwide for CEN national Members.
---------------------- Page: 2 ----------------------
EN 997:2003 (E)
Contents
page

Foreword......................................................................................................................................................................4

1 Scope ..............................................................................................................................................................5

2 Normative references ....................................................................................................................................5

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

4 Classification..................................................................................................................................................8

5 Functional requirements and test methods for class 1 products.............................................................8

5.1 Depth of water seal ........................................................................................................................................8

5.2 Flushing requirements ..................................................................................................................................8

5.2.1 General............................................................................................................................................................8

5.2.2 Wash of bowl..................................................................................................................................................9

5.2.3 Flushing of toilet paper .................................................................................................................................9

5.2.4 Flushing of fifty small plastic balls ..............................................................................................................9

5.2.5 Over-splashing...............................................................................................................................................9

5.2.6 After-flush volume .........................................................................................................................................9

5.3 Water absorption ...........................................................................................................................................9

5.4 Static load.......................................................................................................................................................9

5.5 Leak tightness................................................................................................................................................9

5.6 Valve reliability.............................................................................................................................................10

5.7 Durability of class 1 products.....................................................................................................................10

5.8 Test methods................................................................................................................................................10

5.8.1 Depth of water seal ......................................................................................................................................10

5.8.2 Flushing tests...............................................................................................................................................10

5.8.3 Determination of water absorption ............................................................................................................12

5.8.4 Load test .......................................................................................................................................................13

5.8.5 Leak tightness..............................................................................................................................................13

5.8.6 Valve reliability.............................................................................................................................................13

5.9 Types of WC pans........................................................................................................................................14

5.9.1 Nominal flush volume..................................................................................................................................14

5.9.2 Flushing devices..........................................................................................................................................15

6 Functional requirements and test methods for class 2 products...........................................................15

6.1 Inlet valve......................................................................................................................................................15

6.2 Backflow prevention....................................................................................................................................15

6.3 Marking of flushing cistern.........................................................................................................................15

6.4 Warning pipe and overflow provision........................................................................................................15

6.5 Flush Volume................................................................................................................................................15

6.5.1 Full flush .......................................................................................................................................................15

6.5.2 Reduced flush ..............................................................................................................................................15

6.6 Flush rate......................................................................................................................................................16

6.7 Physical endurance and leakage of flushing device (valve reliability and water/leak tightness) .......16

6.8 Chemical endurance of flushing device (water/leak tightness)..............................................................16

6.9 Solids discharge and after-flush volume for maximum flush.................................................................16

6.10 Paper discharge for reduced-flush volume...............................................................................................16

6.11 Liquid contaminant dye retention ..............................................................................................................16

6.12 Wash of bowl................................................................................................................................................16

6.13 Depth of water seal ......................................................................................................................................16

6.14 Static load of class 2 products...................................................................................................................16

6.15 Water absorption .........................................................................................................................................17

6.16 Durability of class 2 products.....................................................................................................................17

6.17 Test methods................................................................................................................................................17

6.17.1 Inlet valve tests ............................................................................................................................................17

6.17.2 Warning pipe and overflow provisions......................................................................................................17

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EN 997:2003 (E)

6.17.3 Flush volume and water trap seal tests.....................................................................................................17

6.17.4 Flush rate test ..............................................................................................................................................18

6.17.5 Physical endurance and leakage test of flushing device ........................................................................19

6.17.6 Chemical endurance test of flushing device ............................................................................................20

6.17.7 Solids discharge and after-flush volume for maximum flush volume test............................................21

6.17.8 Paper discharge for reduced-flush volume test .......................................................................................22

6.17.9 Liquid contaminant dye retention test.......................................................................................................22

6.17.10 Wash of bowl................................................................................................................................................23

6.17.11 Summary of requirements for compatibility testing of class 2 products ..............................................24

7 Dangerous substances ...............................................................................................................................24

8 Marking .........................................................................................................................................................24

9 Evaluation of conformity.............................................................................................................................24

9.1 General..........................................................................................................................................................24

9.2 Type testing..................................................................................................................................................25

9.2.1 Initial type testing ........................................................................................................................................25

9.2.2 Further type testing .....................................................................................................................................25

9.2.3 Sample, testing and compliance criteria...................................................................................................25

9.3 Factory Production Control (FPC) .............................................................................................................26

9.3.1 General..........................................................................................................................................................26

9.3.2 Testing equipment.......................................................................................................................................26

9.3.3 Raw materials and components.................................................................................................................26

9.3.4 Product testing and assessment ...............................................................................................................27

9.3.5 Non-conforming products ..........................................................................................................................27

Annex A (normative) Valve-type test flushing cistern...........................................................................................28

Annex B (normative) Test rig for pressure flush valve .........................................................................................30

Annex C (normative) Test rig for after-flush volume test .....................................................................................33

C.1 Test rig for after-flush volume test for independent WC pans (Figures C.1 and C.2) ..........................33

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

suites (Figure C.3)........................................................................................................................................34

Annex D (normative) Basket method ......................................................................................................................35

Annex E (normative) Preparation of test specimens.............................................................................................36

Annex F (normative) Valveless-type test flushing cistern....................................................................................38

Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU

Construction Products Directive................................................................................................................40

ZA.1 Scope and relevant characteristics ...........................................................................................................40

ZA.2 Procedure for attestation of conformity of WC pans and WC suites .....................................................42

ZA.2.1 System of attestation of conformity ..........................................................................................................42

ZA.2.2 Declaration of conformity ...........................................................................................................................42

ZA.3 CE marking and labelling............................................................................................................................43

---------------------- Page: 4 ----------------------
EN 997:2003 (E)
Foreword

This document (EN 997:2003) 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 March 2004, and conflicting national standards shall be withdrawn at the latest by

June 2005.
This document supersedes EN 997:1999.

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

Free Trade Association, and supports essential requirements of EU Directive(s).

For relationship with EU Directive(s), 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.

NOTE: Noise level has not been considered in the present amendment. Noise level will be considered as soon as a

European test method is available.
Annexes A, B, C, D, E and F are normative.

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

countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,

Slovakia, Spain, Sweden, Switzerland and the United Kingdom.

Presently, a test method is under elaboration by CEN/TC 126 "Acoustic properties of building products and of buildings"

---------------------- Page: 5 ----------------------
EN 997:2003 (E)
1 Scope

This 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

vitreous china or stainless steel.

This standard does not apply to squatting toilettes, WC pans without integral trap, flushing cisterns as separate

appliances.

Flushing cisterns are covered by other standards and the reference to cisterns in this standard is related only to the

definition and requirements of flushing volume.
2 Normative references

This European Standard incorporates by dated or undated reference, provisions from other publications. These

normative references are cited at the appropriate places in the text and the publications are listed hereafter. For

dated references, subsequent amendments to or revisions of any of these publications apply to this European

Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the

publication referred to applies (including amendments).
AS 1172-1:1993, Water closets of 6/3 L capacity - Pans.

BS 1212-1:1990, Float operated valves. Specification for piston type float operated valves (copper alloy body)

(excluding floats).

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 1212-4:1991, Float operated valves. Specification for compact type float operated valves for WC flushing

cisterns (including floats).
NOTE These normative references refer to products of class 2 only.
3 Terms and definitions

For the purposes of this European Standard, the following terms and definitions apply:

3.1
pedestal WC pan
floor-mounted WC pan that has an integral base
3.2
wall-hung WC pan
WC pan cantilevered clear of the floor
3.3
wash-out WC pan

WC pan in which excrement falls first into a shallow water filled bowl, before being

removed by the flushing water
---------------------- Page: 6 ----------------------
EN 997:2003 (E)
3.4
wash-down WC pan

WC pan in which excrement falls directly into the trap before being removed by the

flushing water
3.5
siphonic WC pan
WC pan in which excrement is removed by siphonage induced by the flushing water
3.6
close-coupled suite

combination of a WC pan and flushing cistern directly coupled into a functional unit

3.7
one-piece WC pan
WC pan manufactured with an integral flushing cistern
3.8
independent WC pan

WC pan suitable for the connection with a flushing cistern or a pressure flush valve

3.9
valve-type flushing cistern

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

of flushing water for removal of excrement from a WC pan
3.10
pressure flush valve

valve directly connected to the water supply which delivers a pre-determined volume of

flushing water for removal of excrement from a WC pan
3.11
valveless type flushing cistern

cistern with outlet actuated by siphonic action which delivers a defined volume of

flushing water for removal of excrement from a WC pan
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
flush volume
volume of water discharged from the flushing device during a flush cycle
3.14
after-flush volume

remaining flush water volume after the last of four test specimens have left the outlet of

the bowl
---------------------- Page: 7 ----------------------
EN 997:2003 (E)
3.15
water trap
water seal that prevents backflow of foul odour from a drain
3.16
fluid contaminant
liquid to be removed by flushing action
3.17
residual fluid contaminant
liquid waste left behind in the WC bowl after completion of a flush
3.18
solid test media
media used to represent faecal matter
3.19
inlet valve

valve that controls and shuts off the flow of water into a cistern, usually by an arm

connected to a float
3.20
flushing device

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

pan or suite for flushing

NOTE A flushing device can be a siphon, drop valve, flap valve or pressurised cistern etc.

For the purposes of this specification, the flushing device includes the activator (i.e. handle,

button, linkages etc.) and all seals, pistons, or other integral components.
3.21
dual-flush

flushing cisterns with two modes of operation, one delivering a larger volume than the

other, in which:
the larger (full) flush option is not greater than 6 l; and

the smaller (reduced) flush option is not greater than two-thirds the volume of the

larger flush
---------------------- Page: 8 ----------------------
EN 997:2003 (E)
3.22
warning level

level of spillover 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
3.23
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. A leak is defined as

being visible discharge of water amounting to more than three separate drops
3.24
long-term leak test

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. A leak is

defined as being visible discharge of water amounting to more than three separate

drops
NOTE Drawings are diagrammatic only.
4 Classification
WC pans and suites are classified as described below:

Class 1: WC pans and suites designed for use with and tested using a nominal flush volume of either 4 l, 5 l,

6 l, 7 l or 9 l (see clause 5).

Class 2: WC suites designed for use with a pressure flushing valve or a flushing cistern incorporating some

other flushing device, and tested as described in clause 6, using a maximum flushing volume of 6 l, or

a dual-flush combining a maximum flush of 6 l and a reduced flush no greater than two-thirds of the

maximum flush volume (see clause 6).
5 Functional requirements and test methods for class 1 products
5.1 Depth of water seal

When tested in accordance with 5.8.1, the depth of the water seal shall be not less than 50 mm.

5.2 Flushing requirements
5.2.1 General

Table 1 correlates the flushing requirements to the WC pan type and flushing volume.

---------------------- Page: 9 ----------------------
EN 997:2003 (E)
Table 1 — Flushing requirements

Type of WC pan Wash of bowl Flushing of toilet Flushing of Over-splashing After-flush

(5.2.2) paper (5.2.3) 50 plastic balls (5.2.5) volume
(5.2.4) (5.2.6)
9X X X X
7X X X X
6X X X X
5X X X X
4X X X X
The efficiency of flushing is simulated by the following requirements.
5.2.2 Wash of bowl

When tested in accordance with 5.8.2.3 , the arithmetic average of any unflushed area below the rim and above the

surface of the water in the trap shall not be more than 50 cm after five flushing operations.

5.2.3 Flushing of toilet paper

When tested in accordance with 5.8.2.4, 12 sheets of toilet paper shall be flushed out of the WC pan a minimum of

4 times out of five tests.
5.2.4 Flushing of fifty small plastic balls

When tested in accordance with 5.8.2.5, after five tests, each with 50 balls, a minimum of 85 % of the balls shall be

flushed out of the WC pan.
5.2.5 Over-splashing

When tested in accordance with 5.8.2.6, flushing water shall not splash beyond the rim of the bowl and wet the

floor. Only a few small drops are permissible.
5.2.6 After-flush volume

When tested in accordance with 5.8.2.7, an after-flush volume of 2.5 l or 2.8 l as appropriate is required.

5.3 Water absorption

When tested in accordance with 5.8.3, the arithmetic average for water absorption of glazed ceramic WC pans

shall not exceed 0,5 % by mass.
5.4 Static load

When tested in accordance with 5.8.4, wall-hung and non-ceramic WC pans and suites shall withstand a force of

(4.00 ± 0.05) kN without showing any evidence of cracking or permanent deformation.

Experience has shown that pedestal ceramic WC pans and suites comply with this requirement.

5.5 Leak tightness

When close-coupled suites comprising a flushing cistern and a WC pan supplied together by the manufacturer as a

unit are tested in accordance with 5.8.5, there shall be no leakage between the WC pan and the flushing cistern.

---------------------- Page: 10 ----------------------
EN 997:2003 (E)
5.6 Valve reliability

When tested in accordance with 5.8.6, the flush of the outlet shall not show leakage greater than three drops within

15 min.
5.7 Durability of class 1 products

Class 1 products conforming with the requirements of 5.2 to 5.6 are deemed to be durable.

5.8 Test methods
5.8.1 Depth of water seal

Install the WC pan in accordance with 5.8.2.2. Flush the WC pan and measure the height from the invert of the

trappage back plate to the surface of the water.
5.8.2 Flushing tests
5.8.2.1 Apparatus

Independent WC pans are to be tested with one or both of the following separate flushing devices with test flushing

volumes in accordance with Table 2 and annex C as indicated by the manufacturer:
Valve-type flushing cistern Type A (see annex A)
Pressure flush valve Type C (see annex B)
For close-coupled suites and one-piece WC pans see Table 3 and annex C.
5.8.2.2 Preparation to test
Independent WC pans

Install the pedestal or wall-hung WC pan to be tested on a firm flat horizontal or vertical surface as appropriate.

Connect a flushing device in accordance with annex A or B.
Close-coupled suites and one-piece WC pans

Install the suite or the one-piece WC pan on a firm flat horizontal or vertical surface as appropriate using the

flushing device provided and specified by the manufacturer. The flushing volume shall be verified for the type of the

WC pan (see Table 4).
5.8.2.3 Sawdust test
5.8.2.3.1 Test material
20 g of fine dry wooden sawdust.
5.8.2.3.2 Test method

Moisten the complete inner surface of the WC pan below the flushing rim and above the surface of the water in the

trap. Immediately afterwards, sprinkle that sawdust as completely and evenly as possible over the moistened

surface. Flush the WC pan and measure any unwashed area. Repeat this procedure 5 times.

---------------------- Page: 11 ----------------------
EN 997:2003 (E)
5.8.2.4 Toilet paper test
5.8.2.4.1 Test material

Toilet paper with a saturation time of (15 ± 10) s verified by the basket method (see annex D). Individual sheets

shall have a size approximately 140 mm x 100 mm. The mass per unit surface of the toilet paper shall be

(30 ± 10) g/m .
5.8.2.4.2 Test method

Individually loosely crumple 12 sheets of toilet paper and drop them separately one after the other into the WC pan

within a time of 14 s to 18 s. Operate the flushing mechanism within 2 s of the last sheet being dropped into the

WC pan. Check for and remove any paper not flushed out of the bowl and the trap. Repeat this test 5 times.

5.8.2.5 Fifty plastic balls test
5.8.2.5.1 Test material

50 balls of non-absorbent material, each having a mass of (3,7 ± 0,1) g and a diameter of (20 ± 0,1) mm .

5.8.2.5.2 Test method

For each flushing operation place the 50 balls into the WC pan and flush the WC pan. Check for and remove any

balls left in the WC pan. Repeat this test 5 times.
5.8.2.6 Over-splashing test
5.8.2.6.1 Test material
Paper of a type which shows surface change when wet.
5.8.2.6.2 Test method

Lay the paper around the WC pan to be tested projecting 200 mm beyond the plan of the bowl projected onto the

floor. Flush the WC pan and record evidence of water on the paper. The test shall be made with the flushing

volume which the WC pan will be approved for.
5.8.2.7 After-flush volume test
5.8.2.7.1 Test rig
A test rig in accordance with annex C.
NOTE Other test rigs can be use
...

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