EN 31:2011/FprA1
(Amendment)Wash basins - Connecting dimensions
Wash basins - Connecting dimensions
This European Standard specifies the connecting dimensions of wash basins in accordance with EN 14688 regardless of materials used for their manufacture.
NOTE 1 Other connecting dimensions are permitted, e.g. special designs of wash basins, if the manufacturer supplies or recommends the appropriate fitting.
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.
Waschbecken - Anschlussmaße
Lavabos - Cotes de raccordement
Umivalniki - Priključne mere
General Information
- Status
- Not Published
- Technical Committee
- CEN/TC 163 - Sanitary appliances
- Current Stage
- 5060 - Closure of Vote - Formal Approval
- Start Date
- 07-Feb-2014
- Due Date
- 27-Jan-2014
- Completion Date
- 07-Feb-2014
Relations
- Effective Date
- 18-Jan-2023
- Effective Date
- 18-Jul-2012
Overview
EN 31:2011/FprA1 is a CEN draft amendment to the European standard EN 31:2011 that specifies the connecting dimensions for wash basins. The standard defines key dimensions and tolerances for waste outlet holes (with and without integral overflow) so that sanitary fittings and waste fittings are mechanically compatible regardless of the basin material. It aligns basin connecting dimensions with EN 14688 and preserves manufacturer freedom for special designs when appropriate fittings are supplied.
Key topics and requirements
- Scope and applicability: Connecting dimensions for wash basins in accordance with EN 14688, independent of basin material. Special designs are allowed if manufacturer-supplied fittings are used.
- Waste outlet geometry: Defined dimensions for the bore of the waste outlet, the reference diameter used to measure outlet height, and the height between the reference diameter and the seal/base or bowl bottom.
- Tolerances and reference sizes: The draft amendment retains standard reference sizes (for example a common bore size of 46 mm and a reference diameter of 63 mm are shown in the tables) while specifying permitted tolerances for these features.
- Cone angle limit: The amendment clarifies the cone angle of the upper section of the waste outlet hole to be ≤ 100°, for both basins with and without integral overflow.
- Permissible heights: The document notes specific permissible heights for the waste outlet measurement (e.g., a height of 45 mm is explicitly permitted in the amendment).
- Illustrative figures: Figures illustrate appliance shapes and dimensions but do not constrain final product shape; manufacturers may vary styling provided connecting dimensions are met.
Practical applications
- Sanitaryware manufacturers use the standard to design wash basins whose waste outlet features are compatible with off-the-shelf waste fittings and seals.
- Plumbing and installation professionals rely on these dimensions to select compatible wastes, seals and trap connections during specification and retrofit.
- Architects, specifiers and procurement teams reference EN 31 when preparing product specifications to ensure interoperability of basins and fittings across projects.
- Regulatory and quality engineers use the standard for compliance checks, type approvals and harmonized product documentation.
Related standards
- EN 14688 (wash basin performance and testing) - referenced for consistency in basin requirements.
- Other CEN standards for sanitary fittings and installation guidance (consult national standards bodies for cross-references).
Keywords: EN 31:2011/FprA1, wash basins connecting dimensions, CEN standard, waste outlet dimensions, basin fittings, overflow, cone angle ≤ 100°, sanitaryware compatibility.
Frequently Asked Questions
EN 31:2011/FprA1 is a draft published by the European Committee for Standardization (CEN). Its full title is "Wash basins - Connecting dimensions". This standard covers: This European Standard specifies the connecting dimensions of wash basins in accordance with EN 14688 regardless of materials used for their manufacture. NOTE 1 Other connecting dimensions are permitted, e.g. special designs of wash basins, if the manufacturer supplies or recommends the appropriate fitting. 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.
This European Standard specifies the connecting dimensions of wash basins in accordance with EN 14688 regardless of materials used for their manufacture. NOTE 1 Other connecting dimensions are permitted, e.g. special designs of wash basins, if the manufacturer supplies or recommends the appropriate fitting. 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.
EN 31:2011/FprA1 is classified under the following ICS (International Classification for Standards) categories: 91.140.70 - Sanitary installations. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 31:2011/FprA1 has the following relationships with other standards: It is inter standard links to EN 31:2011+A1:2014, EN 31:2011. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN 31:2011/FprA1 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2014
8PLYDOQLNL3ULNOMXþQHPHUH
Wash basins - Connecting dimensions
Waschbecken - Anschlussmaße
Lavabos - Cotes de raccordement
Ta slovenski standard je istoveten z: EN 31:2011/FprA1
ICS:
91.140.70 Sanitarne naprave Sanitary installations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
FINAL DRAFT
EN 31:2011
NORME EUROPÉENNE
EUROPÄISCHE NORM
FprA1
November 2013
ICS 91.140.70
English Version
Wash basins - Connecting dimensions
Lavabos - Cotes de raccordement Waschbecken - Anschlussmaße
This draft amendment is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee
CEN/TC 163.
This draft amendment A1, if approved, will modify the European Standard EN 31:2011. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.
This draft amendment was established by CEN 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 31:2011/FprA1:2013: E
worldwide for CEN national Members.
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