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SLOVENSKI STANDARD
oSIST prEN 1514-1:2023
01-januar-2023
Prirobnice in prirobnični spoji - Mere tesnil za prirobnice z oznako PN - 1. del:
Nekovinska ravna tesnila z vložkom ali brez njega
Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 1:
Non-metallic flat gaskets with or without inserts
Flansche und ihre Verbindungen - Maße für Dichtungen für Flansche mit PN-
Bezeichnung - Teil 1: Flachdichtungen aus nichtmetallischem Werkstoff mit oder ohne
Einlagen
Brides et leurs assemblages - Dimensions des joints pour les brides désignées PN -
Partie 1 : Joints plats non-métalliques avec ou sans insert
Ta slovenski standard je istoveten z: prEN 1514-1
ICS:
23.040.60 Prirobnice, oglavki in spojni Flanges, couplings and joints
elementi
23.040.80 Tesnila za cevne zveze Seals for pipe and hose
assemblies
oSIST prEN 1514-1:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN 1514-1:2023
oSIST prEN 1514-1:2023
DRAFT
EUROPEAN STANDARD
prEN 1514-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2023
ICS 23.040.80 Will supersede EN 1514-1:1997
English Version
Flanges and their joints - Dimensions of gaskets for PN-
designated flanges - Part 1: Non-metallic flat gaskets with
or without inserts
Brides et leurs assemblages - Dimensions des joints Flansche und ihre Verbindungen - Maße für
pour les brides désignées PN - Partie 1 : Joints plats Dichtungen für Flansche mit PN-Bezeichnung - Teil 1:
non-métalliques avec ou sans insert Flachdichtungen aus nichtmetallischem Werkstoff mit
oder ohne Einlagen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 74.
If this draft becomes a European Standard, 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.
This draft European Standard 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye 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: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1514-1:2023 E
worldwide for CEN national Members.
oSIST prEN 1514-1:2023
prEN 1514-1:2023 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Symbols and abbreviations . 6
5 Classification, designation and coding . 6
5.1 Range of PN designation . 6
5.2 Range of DN designation . 7
5.3 Gasket types . 7
5.4 Information to be supplied by the purchaser . 7
5.4.1 Mandatory information . 7
5.4.2 Optional information . 7
5.5 Gasket designs and materials . 7
6 Gasket types . 8
7 Range of gasket sizes . 11
8 Dimensions. 11
8.1 Thickness . 11
8.2 Diameters . 11
8.3 Tolerances . 18
9 Marking . 19
Annex A (informative) Gasket materials . 21
Bibliography . 24
oSIST prEN 1514-1:2023
prEN 1514-1:2023 (E)
European foreword
This document (prEN 1514-1:2023) has been prepared by Technical Committee CEN/TC 74 “Flanges
and their joints”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 1514-1:1997.
In comparison with the previous edition EN 1514-1:1997, the following technical modifications have
been made:
a) normative references have been updated;
b) terms and definitions have been updated;
c) Clause 4“Symbols and abbreviations” has been inserted;
d) in Clause 5 information to be supplied by the purchaser has been revised and more details have
been added;
e) in Clause 8 table with gasket dimensions have been arranged according gasket types and tolerances
for gaskets have been introduced in 8.3;
f) in Clause 9 former content has been incorporated in Clause 8 and markings have been revised;
g) former Annex A “A-deviation” has been incorporated in 5.5;
h) new Annex A “gasket materials” to give guidance on how to mark gaskets;
j) the document has been editorially revised.
EN 1514 will consist of the following four parts:
— Part 1: Non-metallic flat gaskets with or without inserts
— Part 2: Spiral wound gaskets for use with steel flanges
— Part 3: Non-metallic PTFE envelope gaskets
— Part 4: Corrugated flat or grooved metallic and filled metallic gaskets for use with steel flanges
The Annex A is informative and contains “Gasket materials”.
oSIST prEN 1514-1:2023
prEN 1514-1:2023 (E)
Introduction
Dimensions for the internal diameter of gaskets are a compromise between all requirements of
EN 1092-1, EN 1092-2, EN 1092-3, and EN 1092-4 so that a single value is given for each gasket size.
oSIST prEN 1514-1:2023
prEN 1514-1:2023 (E)
1 Scope
This document specifies non-metallic flat gaskets, with or without inserts, for use with flanges in
accordance with EN 1092-1, EN 1092-2, EN 1092-3 and EN 1092-4, and pipes and fittings in accordance
with EN 545, EN 598, and EN 969, for pressure application up to and including PN 63 values and
dimensions up to and including DN 4000. In addition, this document also gives guidance on typical
materials used and how they should be marked.
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 545, Ductile iron pipes, fittings, accessories and their joints for water pipelines — Requirements and
test methods
EN 598, Ductile iron pipes, fittings, accessories and their joints for sewerage application — Requirements
and test methods
EN 969, Ductile iron pipes, fittings, accessories and their joints for gas pipelines — Requirements and test
methods
EN 1092-1, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN
designated — Part 1: Steel flanges
EN 1092-2, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN
designated — Part 2: Cast iron flanges
EN 1092-3, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN
designated — Part 3: Copper alloy flanges
EN 1092-4, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN
designated — Part 4: Aluminium alloy flanges
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
— ISO Online browsing platform: available at
3.1
DN
alphanumeric designation of size for components of a pipework system, which is used for reference
purposes. It comprises the letters DN followed by a dimensionless whole number which is indirectly
related to the physical size, in millimeters, of the bore or outside diameter of the end connections
Note 1 to entry: The number following the letters DN does not represent a measurable value and should not be
used for calculation purposes except where specified in the relevant standard.
[SOURCE: EN ISO 6708:1995, 2.1]
oSIST prEN 1514-1:2023
prEN 1514-1:2023 (E)
3.2
PN
alphanumeric designation used for reference purposes related to a combination of mechanical and
dimensional characteristics for a component of a pipework system. It comprises the letters PN followed
by a dimensionless number
Note 1 to entry: The number following the letters PN does not represent a measurable value and should not be
used for calculation purpose except where specified in the relevant standard.
Note 2 to entry: The designation PN is not meaningful unless it is related to the relevant component standard
number.
Note 3 to entry: The maximum allowable pressure of a pipework component depends on the PN number, the
material and design of the component, its maximum allowable temperature, etc. The relevant European
Component standards include tables of specified pressure/temperature ratings of, in minimum, include rules how
to determine pressure/temperature ratings.
Note 4 to entry: It is intended that all components with the same PN and DN designations have the same mating
dimensions for compatible flange types.
[SOURCE: EN 1333:2006, 2.1]
4 Symbols and abbreviations
For the purposes of this document, the following notations apply.
Where units are applicable, they are shown in brackets. Where units are not applicable, no indication is
given.
d Gasket inside diameter [mm]
D Gasket outside diameter [mm]
DN Diameter Nominal, see 3.1 .
FF Full face -
IBC Inside bolt circle -
K Gasket bolt circle diameter [mm]
L Gasket bolthole diameter [mm]
PN Pressure Nominal, see 3.2 -
SR Spigot and recess -
t Thickness of gasket [mm]
TG Tongue and groove -
5 Classification, designation and coding
5.1 Range of PN designation
Gaskets shall be designated as suitable for use with one or more of the following PN values:
PN 2,5 PN 25
PN 6 PN 40
oSIST prEN 1514-1:2023
prEN 1514-1:2023 (E)
PN 10 PN 63
PN 16
5.2 Range of DN designation
Gasket nominal sizes shall be designated in accordance with the ranges specified in Table 1.
5.3 Gasket types
Gasket types, as defined in Clause 6 and as illustrated in Figure 1 and Figure 2, shall be designated as:
Type FF Full face
Type IBC Inside bolt circle
Type TG Tongue and groove
Type SR Spigot and recess
5.4 Information to be supplied by the purchaser
5.4.1 Mandatory information
The following information shall be supplied by the purchaser at the time of enquiry and order:
a) the number and part of this document, i.e. EN 1514-1;
b) gasket type designation (see 5.3);
c) DN designation (see Table 2 to Table 6, as applicable);
d) PN designation (see Table 2 to Table 6, as applicable);
e) thickness (see 8.1);
f) material(s) (see 5.5 and Annex A);
5.4.2 Optional information
Several options are specified in this part of EN 1514 and these are listed below. In the event
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