SIST EN 33:2019

WC pans and WC suites - Connecting dimensions

This document specifies the connecting dimensions of WC pans and WC suites regardless of the materials used for their manufacture.
This document does not apply to siphonic action WC pans and WC suites.
NOTE 1   Other connecting dimensions are permitted, e.g. special designs of WC pans, if the manufacturer supplies or recommends the appropriate fittings.
NOTE 2   The shape of the appliance in the figures is for illustration only; it in no way prejudices the final shape of the appliance, which is left to the initiative of the manufacturer.

WC-Becken und WC-Anlagen - Anschlussmaße

Dieses Dokument legt Anschlussmaße für WC-Becken und WC-Anlagen, unabhängig vom für ihre Herstellung verwendeten Werkstoff, fest.
Dieses Dokument gilt nicht für Absauge-WCs und  WC-Anlagen.
ANMERKUNG 1   Andere Anschlussmaße sind zulässig, z. B. für spezielle Ausführungen von WC-Becken, wenn der Hersteller eine geeignete Ablaufgarnitur mitliefert oder empfiehlt.
ANMERKUNG 2   Die in den Bildern dargestellte Form der Gegenstände wurde nur für das bessere Verständnis gewählt; sie schreibt nicht die endgültige Form der Gegenstände vor, die der Wahl des Herstellers überlassen bleibt.

Cuvettes de WC à alimentation indépendante et cuvettes de WC à réservoir attenant - Cotes de raccordement

Le présent document spécifie les cotes de raccordement des cuvettes de WC à alimentation indépendante et des cuvettes de WC à réservoir attenant, quels que soient les matériaux entrant dans leur fabrication.
Ce document ne s'applique pas aux cuvettes de WC à action siphonique.
NOTE 1   D’autres cotes de raccordement sont admises, par exemple pour les modèle spéciaux de cuvettes de WC, si le fabricant fournit ou recommande les dispositifs appropriés
NOTE 2   La forme schématique des appareils est donnée pour faciliter la compréhension ; elle ne préjuge en rien de la forme définitive de l'appareil qui est laissée à l'initiative des fabricants.

WC školjke in WC naprave - Priključne mere

Ta dokument določa dimenzije WC školjk in WC naprav, ne glede na materiale, uporabljene za njihovo izdelavo.
Ne uporablja se za sifonske WC školjke in WC naprave.
OPOMBA 1: Dovoljene so drugačne priključne mere, npr. za posebne izvedbe straniščne školjke, če proizvajalec dobavi ali priporoči ustrezne priključke.
OPOMBA 2: Oblika naprave na slikah je samo za ilustracijo in nikakor ne posega v končno obliko naprave, ki je prepuščena pobudi proizvajalca.

General Information

• Status: Published
• Public Enquiry End Date: 19-Jun-2018
• Publication Date: 04-Jun-2019
• ICS: 91.140.70 - Sanitary installations
• Technical Committee: IOVO - Water supply and waste water engineering
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 27-May-2019
• Due Date: 01-Aug-2019
• Completion Date: 05-Jun-2019
• Ref Project: EN 33:2019 - WC pans and WC suites - Connecting dimensions

Relations

• Replaces: SIST EN 33:2011 - WC pans and WC suites - Connecting dimensions
• Effective Date: 01-Jul-2019
• Replaces: SIST EN 33:2011/AC:2014 - WC pans and WC suites - Connecting dimensions
• Effective Date: 01-Jul-2019

Overview

SIST EN 33:2019 is a European standard developed by CEN that specifies the connecting dimensions of WC pans and WC suites, regardless of the materials used for their manufacture. This standard aims to create uniformity in the dimensions related to the installation and fitting of WC appliances, facilitating compatibility between components from different manufacturers.

Notably, SIST EN 33:2019 excludes siphonic action WC pans and suites, focusing on standard gravity-flush types. It also allows for special or alternative designs if manufacturers provide the corresponding fittings or instructions.

Key Topics

• Connecting dimensions for WC pans and suites
  Defines sizes and positions for inlets, outlets, and fixing points to ensure proper installation.

• Inlet Sizes and Positioning
  Specifies internal diameter, depth, and height of water supply inlets for WC pans with independent water supply, allowing custom dimensions for children’s or accessibility-friendly designs.

• Outlet Dimensions
  Details external diameters, outlet positions, and free space around outlets for both horizontal and vertical discharge types. Includes different specifications for pedestal, wall-hung, and back-to-wall WC pans.

• Fixing Dimensions
  Sets the spacing and diameter of fixing holes for wall-hung WC pans and suites to standardize mounting and ensure stability.

• Seat Fixing Dimensions
  Provides guidelines for fixing holes for WC seats, including spacing and angles for secure, ergonomically stable seat installation.

• Tolerance and Special Cases
  Includes permissible tolerances for dimensions and acknowledgement of special designs that may require manufacturer-specific fittings.

Applications

• Sanitary Installation Planning
  Helps plumbers, architects, and engineers select and install WC pans and suites that comply with European dimensional norms, enhancing interoperability.

• Manufacturing and Product Development
  Enables sanitary appliance manufacturers to design WC pans and suites with compatible connecting and fixing dimensions, reducing installation errors and product returns.

• Quality Control and Verification
  Provides inspectors and construction professionals with defined dimensional criteria for assessing WC appliance conformity during and after installation.

• Accessible and Specialized Designs
  Offers flexibility for the design of accessible toilets by allowing adjusted dimensions suitable for children and persons with disabilities, while maintaining connection standards.

Related Standards

• EN 33:2011 and EN 33:2011/AC:2014
  Previous editions superseded by SIST EN 33:2019, now withdrawn.

• Standards on Sanitary Installations (ICS 91.140.70)
  Includes additional standards covering broader aspects of plumbing systems and sanitary appliances.

• CEN/TC 163 - Sanitary Appliances
  The technical committee responsible for this standard, which also covers other related standards on sanitary products and fittings.

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By adhering to SIST EN 33:2019, stakeholders in the construction, manufacturing, and installation of WC pans and suites benefit from clear, harmonized dimensions. This standard supports improved product compatibility, safety, and accessibility across the European market, ultimately promoting efficient and reliable sanitary installations.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2019
Nadomešča:
SIST EN 33:2011
SIST EN 33:2011/AC:2014
WC školjke in WC naprave - Priključne mere
WC pans and WC suites - Connecting dimensions
WC-Becken und WC-Anlagen - Anschlussmaße
Cuvettes de WC à alimentation indépendante et cuvettes de WC à réservoir attenant -
Cotes de raccordement
Ta slovenski standard je istoveten z: EN 33:2019
ICS:
91.140.70 Sanitarne naprave Sanitary installations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 33
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2019
EUROPÄISCHE NORM
ICS 91.140.70 Supersedes EN 33:2011
English Version
WC pans and WC suites - Connecting dimensions
Cuvettes de WC à alimentation indépendante et WC-Becken und WC-Anlagen - Anschlussmaße
cuvettes de WC à réservoir attenant - Cotes de
raccordement
This European Standard was approved by CEN on 8 March 2019.

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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 33:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Connecting dimensions . 4
4.1 Inlet of WC pans with independent water supply . 4
4.2 Outlets of WC pans and WC suites . 6
5 Fixing dimensions for wall-hung WC pans and WC suites . 9
6 Fixing dimensions for the seat . 10

European foreword
This document (EN 33:2019) 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 November 2019, and conflicting national standards
shall be withdrawn at the latest by November 2019.
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 33:2011 and EN 33:2011/AC:2013.
In comparison with the previous edition, the following technical modifications have been made:
— a measurement of (75 ± 15) mm is added to dimension q in Table 4.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, 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.
1 Scope
This document specifies the connecting dimensions of WC pans and WC suites regardless of the
materials used for their manufacture.
This document does not apply to siphonic action WC pans and WC suites.
NOTE 1 Other connecting dimensions are permitted, e.g. special designs of WC pans, if the manufacturer
supplies or recommends the appropriate fittings.
NOTE 2 The shape of the appliance in the figures is for illustration only; it in no way prejudices the final shape
of the appliance, which is left to the initiative of the manufacturer.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document.
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
4 Connecting dimensions
4.1 Inlet of WC pans with independent water supply
The connecting dimensions of inlets of WC pans with independent water supply shall comply with the
dimensions given in Tables 1 and 2.
Table 1 — Inlet dimensions
Dimensions
...