WC and urinal flushing cisterns

This European Standard specifies design, performance requirements and the test methods for WC and urinal flushing cisterns with flushing mechanism, inlet valve and overflow.
This document covers flushing cisterns designed to be connected to drinking water installations inside buildings.
This standard does not cover automatic valveless siphon flushing cisterns for flushing urinals.
NOTE   Flushing cisterns for one-piece WCs and close-coupled suites are covered by EN 997.

Spülkästen für WC-Becken und Urinale

Diese Europäische Norm legt konstruktive und Funktionsanforderungen sowie Prüfverfahren für Spülkästen für WC Becken und Urinale mit Spülmechanismus, Füllventil und Überlauf fest.
Dieses Dokument gilt für Spülkästen, die ständig an die Trinkwasser Installationen in Gebäuden angeschlossen sind.
Diese Norm gilt nicht für Automatikspülkästen ohne Ablaufventil nach dem Saugheberprinzip zur Spülung von Urinalen.
ANMERKUNG   Spülkästen für Einstück-WCs und WC-Kombinationen werden durch EN 997 abgedeckt.

Réservoirs de chasse d'eau pour WC et urinoir

La présente Norme européenne spécifie les exigences relatives à la conception et à la performance ainsi que les méthodes d'essai applicables aux réservoirs de chasse pour WC et urinoirs comportant un mécanisme de chasse, un robinet de remplissage et un trop-plein.
La présente Norme européenne ne couvre que les réservoirs de chasse devant être raccordés à des installations d'eau potable dans les bâtiments.
NOTE   Les réservoirs des WC monobloc et des ensembles WC à réservoirs attenant sont traités dans EN 997.

Izplakovalniki stranišč in pisoarjev

Ta evropski standard določa zasnovo, zahteve glede zmogljivosti in preskusne metode za izplakovalnike stranišč in pisoarjev z mehanizmom za izplakovanje, dovodnim ventilom ter prelivom.
Ta dokument obravnava izplakovalnike, ki so namenjeni priključitvi na omrežje s pitno vodo v stavbah.
Ta standard ne obravnava samodejnih sifonskih izplakovalnikov brez ventilov za pisoarje z izplakovanjem.
OPOMBA:   Izplakovalniki za enodelne straniščne školjke in prigrajene naprave so obravnavani v standardu EN 997.

General Information

Status
Published
Public Enquiry End Date
14-Nov-2017
Publication Date
11-Nov-2018
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
22-Oct-2018
Due Date
27-Dec-2018
Completion Date
12-Nov-2018

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SLOVENSKI STANDARD
SIST EN 14055:2018
01-december-2018
1DGRPHãþD
SIST EN 14055:2011+A1:2015
,]SODNRYDOQLNLVWUDQLãþLQSLVRDUMHY
WC and urinal flushing cisterns
Spülkästen für WC-Becken und Urinale
Réservoirs de chasse d'eau pour WC et urinoir
Ta slovenski standard je istoveten z: EN 14055:2018
ICS:
91.140.70 Sanitarne naprave Sanitary installations
SIST EN 14055:2018 en,fr,de

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

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SIST EN 14055:2018
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SIST EN 14055:2018
EN 14055
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2018
EUROPÄISCHE NORM
ICS 91.140.70 Supersedes EN 14055:2010+A1:2015
English Version
WC and urinal flushing cisterns

Réservoirs de chasse d'eau pour WC et urinoir Spülkästen für WC-Becken und Urinale

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 NORMALISATIO N
EUROPÄISCHES KOMITEE FÜR NORMUN G
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 14055:2018 E

worldwide for CEN national Members.
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SIST EN 14055:2018
EN 14055:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

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

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

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

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

5 Characteristics and test methods for type 1 products ....................................................................... 9

5.1 Design .................................................................................................................................................................. 9

5.1.1 Flushing cistern equipment ......................................................................................................................... 9

5.1.2 Water supply connection.............................................................................................................................. 9

5.1.3 Supply piping .................................................................................................................................................... 9

5.1.4 Removable parts .............................................................................................................................................. 9

5.1.5 Connecting dimensions ................................................................................................................................. 9

5.1.6 Flush pipes ...................................................................................................................................................... 11

5.2 Hydraulic and mechanical characteristics .......................................................................................... 13

5.2.1 Flush volume .................................................................................................................................................. 13

5.2.2 Water-saving devices .................................................................................................................................. 14

5.2.3 Flush rate and impact force ...................................................................................................................... 14

5.2.4 Overflow .......................................................................................................................................................... 15

5.2.5 Inlet valve opening characteristics for water saving flushing ..................................................... 16

5.2.6 Safety margin – dimension “c” ................................................................................................................. 16

5.2.7 Backflow prevention, air gap, safety margin – dimension “a” ..................................................... 17

5.2.8 Outlet valve leaktightness ......................................................................................................................... 17

5.2.9 Outlet valve reliability ................................................................................................................................ 17

5.2.10 Operating force ............................................................................................................................................. 17

5.2.11 Durability ........................................................................................................................................................ 17

5.3 Test methods ................................................................................................................................................. 18

5.3.1 General ............................................................................................................................................................. 18

5.3.2 Flush volume .................................................................................................................................................. 18

5.3.3 Flush rate ........................................................................................................................................................ 19

5.3.4 Determination of the overflow capacity .............................................................................................. 23

5.3.5 Inlet valve opening characteristics ........................................................................................................ 24

5.3.6 Determination of dimension “c” ............................................................................................................. 24

5.3.7 Determination of dimension “a” ............................................................................................................. 24

5.3.8 Outlet valve leak tightness ........................................................................................................................ 24

5.3.9 Outlet valve reliability test ....................................................................................................................... 25

5.3.10 Operating force ............................................................................................................................................. 25

5.3.11 Impact force ................................................................................................................................................... 27

6 Functional characteristics and test methods for type 2 products .............................................. 31

6.1 Inlet valve ........................................................................................................................................................ 31

6.2 Backflow prevention ................................................................................................................................... 31

6.3 Marking of flushing cistern ....................................................................................................................... 31

6.4 Warning pipe and overflow provision .................................................................................................. 31

6.5 Flush volume .................................................................................................................................................. 31

6.5.1 Full flush .......................................................................................................................................................... 31

6.5.2 Reduced flush ................................................................................................................................................ 32

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SIST EN 14055:2018
EN 14055:2018 (E)

6.6 Flush rate ......................................................................................................................................................... 32

6.7 Physical endurance and leakage of flushing device ......................................................................... 32

6.8 Chemical endurance of flushing device ................................................................................................ 32

6.9 Durability......................................................................................................................................................... 32

6.10 Test methods .................................................................................................................................................. 32

6.10.1 Inlet valve tests .............................................................................................................................................. 32

6.10.2 Warning pipe and overflow provisions ................................................................................................ 33

6.10.3 Flush volume test .......................................................................................................................................... 33

6.10.4 Flush rate test ................................................................................................................................................ 34

6.10.5 Physical endurance and leakage test of flushing device ................................................................ 35

6.10.6 Chemical endurance test of flushing device ........................................................................................ 36

6.10.7 Requirements for compatibility testing of type 2 products .......................................................... 36

7 Characteristics and test methods for type 3 products .................................................................... 37

7.1 Characteristics and test methods............................................................................................................ 37

7.2 Adjustment ...................................................................................................................................................... 37

8 Acoustic characteristics ............................................................................................................................. 37

9 Dangerous substances ................................................................................................................................ 37

10 Marking ............................................................................................................................................................ 37

11 Assessment and verification of constancy of performance – AVCP ............................................ 39

11.1 General ............................................................................................................................................................. 39

11.2 Type testing .................................................................................................................................................... 40

11.2.1 General ............................................................................................................................................................. 40

11.2.2 Test samples, testing and compliance criteria ................................................................................... 40

11.3 Factory production control (FPC) ........................................................................................................... 43

11.3.1 General ............................................................................................................................................................. 43

11.3.2 Equipment ....................................................................................................................................................... 43

11.3.3 Raw materials and components .............................................................................................................. 43

11.3.4 Product testing and assessment .............................................................................................................. 43

11.3.5 Non-complying products ............................................................................................................................ 43

11.3.6 Corrective action ........................................................................................................................................... 44

Annex ZA (informative) Relationship between this European Standard and the

requirements of Regulation (EU) No. 305/2011 ............................................................................... 45

ZA.1 Scope and relevant characteristics ........................................................................................................ 45

ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) ...................... 46

ZA.3 Assignment of AVCP tasks ......................................................................................................................... 46

Bibliography ................................................................................................................................................................. 48

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SIST EN 14055:2018
EN 14055:2018 (E)
European foreword

This document (EN 14055:2018) 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 14055:2010+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.
The main changes introduced in EN 14055:2010+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

rev 1 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 14055:2018
EN 14055:2018 (E)
1 Scope

This European Standard specifies design, performance characteristics and the test methods for WC and

urinal flushing cisterns with flushing mechanism, inlet valve and overflow.

This document covers flushing cisterns designed to be connected to drinking water installations inside

buildings.

This standard does not cover automatic valveless siphon flushing cisterns for flushing urinals.

NOTE Flushing cisterns for one-piece WCs and close-coupled suites are covered by EN 997.

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 997, WC pans and WC suites with integral trap

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

devices to prevent pollution by backflow
EN 13407:2015, Wall-hung urinals - Functional requirements and test methods
EN 14124, Inlet valves for flushing cisterns with internal overflow

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
3.1
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
3.2
valveless-type flushing cistern

cistern with integral syphonic actuated outlet device, for storage and discharge of a defined volume of

flushing water for removal of excrement from a WC pan

Note 1 to entry: Both types of flushing cisterns are available, as detailed in Figure 1 below.

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SIST EN 14055:2018
EN 14055:2018 (E)
Wall-hung independent low-level
Built-in independent
Wall-hung independent mid-level
Wall-hung independent high-level
One-piece integral (with WC pan)
Close-coupled
Figure 1 — types of flushing cisterns
3.3
close-coupled multiple use flushing cistern
close-coupled flushing cistern for use with different WC pans
3.4
independent flushing cistern
flushing cistern mounted separately from a WC pan or urinal
3.5
outlet valve
mechanism for opening and closing the outlet orifice of the flushing cistern
3.6
operating mechanism
mechanism to open, and if applicable, close the outlet valve
3.7
flush pipe
connecting pipe between a flushing cistern’s outlet and a WC’s or urinal's inlet
3.8
overflow

device enabling release of excess water from a flushing cistern when water reaches a pre-determined

level
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SIST EN 14055:2018
EN 14055:2018 (E)
3.9
inlet valve
valve that controls and shuts off the flow of water into a flushing cistern
3.10
overflow level

water level corresponding to the upper edge of the overflow or to the lower edge of the overflow notch

3.11
maximum water level

highest water level reached after flow stabilisation, in the event of continuous supply, as a result of

malfunction of the inlet valve
3.12
critical water level

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

3.13
residual water level
water level after a full flush is completed
3.14
adjustable residual water level

water level in a cistern, after (uninterrupted) flushing, when an outlet mechanism can be adjusted to

the elevated residual water level
3.15
meniscus level
level resulting from surface tension of water during overflowing
3.16
nominal water level
water level when a flushing cistern is filled to the nominal flush volume
3.17
nominal flush volume

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

3.18
flush volume
volume of water discharged from the flushing cistern during a flush cycle
3.19
safety margin

distance between the nominal water level determined by the manufacturer and the overflow level

3.20
flush rate
volume of water flowing out of a flushing cistern as a function of time
3.21
test height

distance between the seat of the outlet valve and the horizontal axis of the flush pipe

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SIST EN 14055:2018
EN 14055:2018 (E)
3.22
impact force
force of the flushing water at the outlet of the flush pipe
3.23
flushing device

device fitted to a cistern to provide controlled measured volume(s) of water to a WC pan or suite for

flushing
3.24
water-saving device

flushing device that permits a part of the total flush volume to be delivered, e.g. acting as double-action

mechanisms (interruptible) or double-control mechanisms (dual control or dual flush)

3.25
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
3.26
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.
3.27
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.
3.28
product type

set of representative performance levels or classes of a construction product, in relation to its essential

characteristics, produced using a given combination of raw materials or other elements in a specific

production process
Note 1 to entry: The definition is taken from Regulation (EU) No. 305/2011.
4 Classification
Flushing cisterns are classified as described below:

— Type 1: Flushing cisterns tested in accordance with the characteristics of Clauses 5 and 8 using a

nominal flush volume of either 4 l, 5 l, 6 l, 7 l or 9 l.

— Type 2: Flushing cisterns tested in accordance with the characteristics of Clauses 6 and 8 using a

maximum flushing volume of 6 l, or a dual-flush which combines a maximum flush of 6 l and a

reduced flush no greater than two-thirds of the maximum flush.

— Type 3: Type 1 flushing cistern intended to be used in connection with urinals.

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SIST EN 14055:2018
EN 14055:2018 (E)
5 Characteristics and test methods for type 1 products
5.1 Design
5.1.1 Flushing cistern equipment
An equipped flushing cistern comprises:

— a shell, provided with a removable lid or an access flap allowing access to components;

— an inlet valve complying with EN 14124;
— a flushing device;
— an overflow device;
— an operating mechanism;
— a flush pipe, when the cistern is for use with an independent WC pan.

In special cases, a combined fitting providing the functions of filling, overflowing and evacuation is

permissible. In this case, the fitting shall be designed to comply with the hygiene, physico-chemical,

leaktightness, hydraulic, pressure resistance, acoustic and mechanical characteristics specified in

EN 14124. The tests shall be performed on the flushing cistern as supplied.
5.1.2 Water supply connection
The inlet valve can be connected to the cistern through:
— the side;
— the back;
— the underside;
— the top.
5.1.3 Supply piping

All materials of the supply piping which could be in contact with drinking water shall not be a danger to

health. They shall not change the taste, aroma or visual appearance of the drinking water.

5.1.4 Removable parts

It shall be possible to dismantle removable parts, without having to remove the flushing cistern.

5.1.5 Connecting dimensions
The connecting dimensions shall comply with Table 1.
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SIST EN 14055:2018
EN 14055:2018 (E)
Table 1 — Connecting dimensions (Figures 2 and 3)
Dimensions
Designation Symbol Remarks
19 ± 2 For inlet valves size 3/8”
Hole for inlet valve —
23 ± 2 For inlet valves size 1/2”
63 For ceramic flushing cisterns
For thin-walled flushing cisterns (e.g.
Hole for outlet valve A 61
0
plastic)
45 For high level flushing cisterns
32,5 For flush pipes of design A
0
Inside diameter of
outlet connection
+05,
For flush pipes of design B
0
Outside diameter of
+04,
a b
For flush pipes of design C
C 49,5
0
outlet connection
Hole in the cover for
+2 c
— 40 Recommended dimension
operating device
Not applicable to flushing cisterns built into wall frames.

Where the exterior diameter of the flush pipe is conical or has several stepped diameters, the maximum

diameter is to be verified and recorded.
Other dimensions are permissible if the performance of the cistern is ensured.
Key
See Table 1
Figure 2 — Outlet connection for flush pipes of design A, B1 and B2
Key
See Table 1
Figure 3 — Outlet connection for flush pipes of design C
NOTE Design B means design B1 and design B2.
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SIST EN 14055:2018
EN 14055:2018 (E)
5.1.6 Flush pipes

The dimensions of flush pipes designed to equip WC pans for independent supply shall comply with

Table 2. The flush pipe shall be provided by the manufacturer of the flushing cistern.

Table 2 — Dimensions of flush pipes (Figures 4 to 7)
Dimension
Designation Symbol Remarks
Outside diameter inlet +05, For flush pipes of design A
0
+05, For flush pipes of designs B1 and B2
0
Inside diameter For flush pipes of design C
c 50
0
+05,
Outside diameter at outlet WC For flush pipes of design A
0
+05, For flush pipes of design B1
0
+05, For flush pipes of design B2
0
+05, For flush pipes of design C
0
Inside diameter at outlet WC f ≥ 39 For flush pipes of designs B1, B2 and C
Height of flush pipe ≥ 1 500 For flush pipes of design A
≥ 165
h For flush pipes of designs B1 and B2
≥ 600
≥ 165 For flush pipes of design C
Length ≥ 210 For flush pipes of designs A, B1 and
≥ 180 For flush pipes of design C
Length of vertical inlet portion m ≥ 100 For flush pipes of design A
Radius of bend 50 to 80 For flush pipes of design A
r ≥ 15 For flush pipes of designs B1 and B2
≥ 5 For flush pipes of design C

Apart from dimension e other dimensions are permissible, provided the performance requirements in

5.2 are satisfied.
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SIST EN 14055:2018
EN 14055:2018 (E)
Key
See Table 2

Figure 4 — Design A flush pipe for wall-hung high-level cisterns, fabricated in one or two parts

Key
See Table 2

Figure 5 — Design B1 and B2 flush pipes for wall-hung low-level or mid-level cisterns

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SIST EN 14055:2018
EN 14055:2018 (E)
Key
See Table 2
Figure 6 — Design C flush pipe for built-in cisterns
Key
r radius of bend
Figure 7 — Detail X
5.2 Hydraulic and mechanical characteristics
5.2.1 Flush volume

Flush volume(s) shall correspond with those specified in Table 3, when measured as described in 5.3.2.

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SIST EN 14055:2018
EN 14055:2018 (E)
Table 3 — Flush volumes
Flush volumes
Nominal flush volumes
l For complete flushing For water-saving (dual) flushing
Minimum Maximum Minimum Maximum
9,0 8,5 9,0 3,0 4,5
7,0 7,0 7,5 3,0 4,0
6,0 6,0 6,5 3,0 4,0
5,0 4,5 5,5 3,0 4,0
4,0 4,0 4,5 2,0 3,0
Only for double-control water-saving (dual) flushing devices.
Flushing cisterns or their components shall be mar
...

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