SIST EN 1514-2:2014+A1:2021

Flanges and their joints - Gaskets for PN-designated flanges - Part 2: Spiral wound gaskets for use with steel flanges

This part of EN 1514 specifies the dimensions and marking of spiral wound gaskets for use in conjunction with flat face and raised face flanges complying with the requirements of EN 1092-1 for PN 10, PN 16, PN 25, PN 40, PN 63, PN 100 and PN 160 and up to and including DN 1 000.
NOTE 1   Dimensions of other types of gaskets for use with flanges to EN 1092-1, EN 1092-2, EN 1092-3 and EN 1092 4 are given in EN 1514-1, EN 1514-3, EN 1514-4, EN 1514-6, EN 1514-7 and EN 1514-8.
NOTE 2   Annex A lists information to be supplied by the purchaser when ordering gaskets in circumstances where the choice of the gasket materials appropriate to the service is left to the manufacturer.

Flansche und ihre Verbindungen - Dichtungen für Flansche mit PN-Bezeichnung - Teil 2: Spiraldichtungen für Stahlflansche

Brides et leurs assemblages - Joints pour les brides désignées PN - Partie 2 : Joints spiralés pour utilisation avec des brides en acier

Prirobnice in prirobnični spoji - Tesnila za prirobnice z oznako PN - 2. del: Spiralna tesnila za jeklene prirobnice (vključuje dopolnilo A1)

General Information

• Status: Published
• Publication Date: 02-Mar-2021
• ICS: 23.040.60 - Flanges, couplings and joints
• ICS: 23.040.80 - Seals for pipe and hose assemblies
• Technical Committee: TLP - Pressure vessels
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 11-Feb-2021
• Due Date: 18-Apr-2021
• Completion Date: 03-Mar-2021
• Ref Project: EN 1514-2:2014+A1:2021 - Flanges and their joints - Gaskets for PN-designated flanges - Part 2: Spiral wound gaskets for use with steel flanges

Relations

• Replaces: SIST EN 1514-2:2014 - Flanges and their joints - Gaskets for PN-designated flanges - Part 2: Spiral wound gaskets for use with steel flanges
• Effective Date: 01-Apr-2021
• Consolidates: SIST EN 1514-2:2014/kFprA1:2020 - Flanges and their joints - Gaskets for PN-designated flanges - Part 2: Spiral wound gaskets for use with steel flanges
• Effective Date: 01-Apr-2021

Overview

EN 1514-2:2014+A1:2021 (CEN) specifies the dimensions and marking of spiral wound gaskets intended for use with flat-face and raised-face steel flanges that comply with EN 1092-1. The standard covers gaskets for PN-designated flanges (PN 10, 16, 25, 40, 63, 100 and 160) up to and including DN 1000, and includes Amendment A1 approved in 2020.

Key topics and technical requirements

• Scope & designation: Gaskets are designated by PN and DN ranges compatible with EN 1092-1 flanges (PN 10–160, DN up to 1000).
• Gasket types: Two main types - Type C/I (with centring ring and inner ring) and Type C/O (with centring ring only). An inner ring is mandatory for all PTFE-filled gaskets and for PN 63/100/160; its use is recommended for lower PN groups and should be specified by the purchaser.
• Dimensions & tolerances: Essential features such as centring ring thickness, allowable movement of the inner ring relative to the centring ring, number of empty wraps, metal thickness of the sealing element and welding points are defined to control fit and performance. For example, centring ring thickness is specified (3 mm ± tolerance) and metal winding thickness is tightly controlled (typical nominal 0.2 mm with narrow tolerance).
• Material & filler rules: Filler options include graphite (ash content ≤ 2% by weight) or PTFE (sintered or unsintered). Sharp edges on rings must be removed and filler protrusion and compression limits are specified to avoid metal-to-metal contact under bolt load.
• Compression & sealing performance: The standard requires that maximum compression achievable by flange bolts must not cause metal-to-metal contact between the centring ring and the flange face.
• Marking & colour coding: Gaskets must be marked for identification; standard prescribes marking and optional colour coding to aid traceability.
• Purchaser information: Annex A lists minimum information a purchaser should supply (operating conditions, fluids, temperatures, pressures) when leaving material selection to the manufacturer.

Applications and users

• Typical applications: industrial piping and pressure systems in oil & gas, petrochemical, power generation, water/wastewater, HVAC and general process plants.
• Primary users: piping designers and engineers, gasket and flange manufacturers, procurement/specification teams, inspection and maintenance personnel, and standards compliance officers.

Related standards

• EN 1092-1 (flanges and flange facings)
• EN 1514 series (other gasket types: Part 1, 3, 4, 6, 7, 8)
• EN 1333 and EN ISO 6708 (PN and DN definitions)

Keywords: EN 1514-2:2014+A1:2021, spiral wound gaskets, PN-designated flanges, EN 1092-1, centring ring, inner ring, gasket dimensions, gasket marking, DN 1000.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2021
Nadomešča:
SIST EN 1514-2:2014
Prirobnice in prirobnični spoji - Tesnila za prirobnice z oznako PN - 2. del: Spiralna
tesnila za jeklene prirobnice (vključuje dopolnilo A1)
Flanges and their joints - Gaskets for PN-designated flanges - Part 2: Spiral wound
gaskets for use with steel flanges
Flansche und ihre Verbindungen - Dichtungen für Flansche mit PN-Bezeichnung - Teil 2:
Spiraldichtungen für Stahlflansche
Brides et leurs assemblages - Joints pour les brides désignées PN - Partie 2 : Joints
spiralés pour utilisation avec des brides en acier
Ta slovenski standard je istoveten z: EN 1514-2:2014+A1:2021
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 1514-2:2014+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2021
EUROPÄISCHE NORM
ICS 23.040.80
English Version
Flanges and their joints - Gaskets for PN-designated
flanges - Part 2: Spiral wound gaskets for use with steel
flanges
Brides et leurs assemblages - Joints pour les brides Flansche und ihre Verbindungen - Dichtungen für
désignées PN - Partie 2 : Joints spiralés pour utilisation Flansche mit PN-Bezeichnung - Teil 2:
avec des brides en acier Spiraldichtungen für Stahlflansche
This European Standard was approved by CEN on 25 July 2014 and includes Amendment 1 approved by CEN on 30 November
2020.
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, 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, 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1514-2:2014+A1:2021 E
worldwide for CEN national Members.

EN 1514-2:2014 +A1:2021 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Designations. 7
4.1 Essential features and dimensions . 7
4.1.1 General . 7
4.1.2 Maximum compression . 8
4.1.3 Use of an inner ring . 8
4.2 Range of PN designations . 9
4.3 Range of DN (nominal sizes) . 9
4.4 Gasket types . 9
4.5 Information to be supplied by the purchaser . 9
5 Gasket designs . 9
6 Gasket types . 10
7 Dimensions . 10
8 Marking . 13
8.1 General . 13
8.2 Colour coding . 13
Annex A (informative) Information to be supplied by the purchaser . 15
Bibliography . 16

European foreword
This document (EN 1514-2:2014+A1:2021) has been prepared by Technical Committee CEN/TC 74
“Flanges and their joints”, the secretariat of which is held by DIN.
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 July 2021, and conflicting national standards shall be
withdrawn at the latest by July 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document includes Amendment 1 approved by CEN on 15 June 2020.
This document supersedes !EN 1514-2:2014".
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
EN 1514, Flanges and their joints — (Dimensions of) gaskets for PN-designated flanges, consists of the
following 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;
— Part 6: Covered serrated metal gaskets for use with steel flanges;
— Part 7: Covered metal jacketed gaskets for use with steel flanges;
— Part 8: Polymeric O-Ring gaskets for grooved flanges.
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, 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, Turkey and the
United Kingdom.
EN 1514-2:2014 +A1:2021 (E)
Introduction
The dimensions of spiral wound gaskets for tongue and groove flanges and spigot and recess flanges to
EN 1092-1 are not included in this part of EN 1514. Such gaskets may be available for these types of
flange and the purchaser is advised to consult the manufacturer as to their availability.
1 Scope
This part of EN 1514 specifies the dimensions and marking of spiral wound gaskets for use in
conjunction with flat face and raised face flanges complying with the requirements of EN 1092-1 for
PN 10, PN 16, PN 25, PN 40, PN 63, PN 100 and PN 160 and up to and including DN 1 000.
NOTE 1 Dimensions of other types of gaskets for use with flanges to EN 1092-1, EN 1092-2, EN 1092-3 and
EN 1092-4 are given in EN 1514-1, EN 1514-3, EN 1514-4, EN 1514-6, EN 1514-7 and EN 1514-8.
NOTE 2 Annex A lists information to be supplied by the purchaser when ordering gaskets in circumstances
where the choice of the gasket materials appropriate to the service is left to the manufacturer.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 1333, Flanges and their joints - Pipework components - Definition and selection of PN
EN ISO 6708, Pipework components - Definition and selection of DN (nominal size) (ISO 6708)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
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 millimetres, 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.
Note 2 to entry: In those standards which use the DN designation system, any relationship between DN and
component dimensions should be given (e.g. DN/OD or DN/ID).
EN 1514-2:2014 +A1:2021 (E)
Note 3 to entry: The preferred DN values are:
DN 10 DN 250 DN 1
DN 15 DN 300 DN 1
DN 20 DN 350 DN 1
DN 25 DN 400 DN 2
DN 32 DN 450 DN 2
DN 40 DN 500 DN 2
DN 50 DN 600 DN 2
DN 60 DN 700 DN 2
DN 65 DN 800 DN 3
DN 80 DN 900 DN 3
DN 100 DN 1 DN 3
000 400
DN 125 DN 1 DN 3
100 600
DN 150 DN 1 DN 3
200 800
DN 200 DN 1 DN 4
400 000
[SOURCE: EN ISO 6708:1995, 2.1 and Clause 3]
3.2
PN
alphanumeric designation used for reference purposes related to a combination of mechanical and
dimensional characteristics of 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 purposes 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 or, 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.
Note 5 to entry: The preferred PN values are:
PN 2,5 PN 25 PN 160
PN 6 PN 40 PN 250
PN 10 PN 63 PN 320
PN 16 PN 100 PN 400
[SOURCE: EN 1333:2006, 2.1 and Clause 3]
4 Designations
4.1 Essential features and dimensions
4.1.1 General
A major feature of the design of spiral wound gaskets mee
...