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SIST EN 1092-1:2018/oprA1:2022

(Amendment)

Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges

Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges

This European Standard for a single series of flanges specifies requirements for circular steel flanges in PN designations PN 2,5 to PN 400 and nominal sizes from DN 10 to DN 4000.
This European Standard specifies the flange types and their facings, dimensions, tolerances, threading, bolt sizes, flange jointing face surface finish, marking, materials, pressure/ temperature ratings and approximate flange masses.
For the purpose of this European Standard, "flanges" include also lapped ends and collars.
This European Standard applies to flanges manufactured in accordance with the methods described in Table 1.
Non-gasketed pipe joints are outside the scope of this European Standard.

Flansche und ihre Verbindungen - Runde Flansche für Rohre, Armaturen, Formstücke und Zubehörteile, nach PN bezeichnet - Teil 1: Stahlflansche

Brides et leurs assemblages - Brides circulaires pour tubes, appareils de robinetterie, raccords et accessoires, désignées PN - Partie 1: Brides en acier

Prirobnice in prirobnični spoji - Okrogle prirobnice za cevi, ventile, fitinge in pribor z oznako PN - 1. del: Jeklene prirobnice - Dopolnilo A1

General Information

Status
Not Published
Public Enquiry End Date
02-Jan-2023
ICS
23.040.60 - Flanges, couplings and joints
Technical Committee
TLP - Pressure vessels
Current Stage
4020 - Public enquire (PE) (Adopted Project)
Start Date
10-Oct-2022
Due Date
27-Feb-2023
Completion Date
03-Mar-2023
Directive
2014/68/EU - Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of pressure equipment
Mandate
M/071 - Mandate to CEN for standardization in the field of Pressure equipment
Ref Project
EN 1092-1:2018/prA1 - Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges

Relations

Amends
SIST EN 1092-1:2018 - Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges
Effective Date
01-Dec-2022

Buy Standard

EN 1092-1:2018/oprA1:2022EN 1092-1:2018/oprA1:2022
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EN 1092-1:2018/oprA1:2022
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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 1092-1:2018/oprA1:2022
01-december-2022
Prirobnice in prirobnični spoji - Okrogle prirobnice za cevi, ventile, fitinge in pribor
z oznako PN - 1. del: Jeklene prirobnice - Dopolnilo A1
Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN
designated - Part 1: Steel flanges
Flansche und ihre Verbindungen - Runde Flansche für Rohre, Armaturen, Formstücke
und Zubehörteile, nach PN bezeichnet - Teil 1: Stahlflansche
Brides et leurs assemblages - Brides circulaires pour tubes, appareils de robinetterie,
raccords et accessoires, désignées PN - Partie 1: Brides en acier
Ta slovenski standard je istoveten z: EN 1092-1:2018/prA1
ICS:
23.040.60 Prirobnice, oglavki in spojni Flanges, couplings and joints
elementi
SIST EN 1092-1:2018/oprA1:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 1092-1:2018/oprA1:2022

---------------------- Page: 2 ----------------------
SIST EN 1092-1:2018/oprA1:2022


DRAFT
EUROPEAN STANDARD
EN 1092-1:2018
NORME EUROPÉENNE

EUROPÄISCHE NORM
prA1
December 2022
ICS
English Version

Flanges and their joints - Circular flanges for pipes, valves,
fittings and accessories, PN designated - Part 1: Steel
flanges
Brides et leurs assemblages - Brides circulaires pour Flansche und ihre Verbindungen - Runde Flansche für
tubes, appareils de robinetterie, raccords et Rohre, Armaturen, Formstücke und Zubehörteile, nach
accessoires, désignées PN - Partie 1: Brides en acier PN bezeichnet - Teil 1: Stahlflansche
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 74.

This draft amendment A1, if approved, will modify the European Standard EN 1092-1:2018. 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, 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1092-1:2018/prA1:2022 E
worldwide for CEN national Members.

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SIST EN 1092-1:2018/oprA1:2022
EN 1092-1:2018/prA1:2022 (E)
Contents Page

European foreword . 3
1 Modifications to European foreword . 4
2 Modifications to Normative references . 4
3 Modifications to Table 7 . 5
4 Modifications to Figure 5 . 10
5 Modifications to Figure 6 . 11
6 Modifications to Figure 7 . 12
7 Modifications to Figure 8 . 13
8 Modifications to Figure 9 . 14
9 Modifications to Figure 10 . 15
10 Modifications to Table 9 . 16
11 Modifications to Annex C . 18
12 Modifications to Annex D . 30
13 Modification to G.2.2 . 31
14 Modifications to G.3.1 . 31
15 Modifications to Annex I . 32


2

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SIST EN 1092-1:2018/oprA1:2022
EN 1092-1:2018/prA1:2022 (E)
European foreword
This document (EN 1092-1:2018/prA1:2022) 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.
In comparison with the previous edition, the following technical modifications have been made:
— Editorial modifications
— Modification and update the clause “Normative references”
— Modifications to Table 7 “Synoptic table”
— Modifications on some figures
— Modifications to Annex C “Masses of flanges”
— Modifications to Annex D “Table D.1”
— Modifications to Annex G “G.3.1 General”
— Modifications to Annex I “Table I.3”
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of
EN 1092-1:2018.
3

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SIST EN 1092-1:2018/oprA1:2022
EN 1092-1:2018/prA1:2022 (E)
1 Modifications to European foreword
Change d) to the following:
“d) flanges Type 05 for PN 160 to PN 400 were implemented.”
2 Modifications to Normative references
Add the following:
EN 10222-4:2017+A1, Steel forgings for pressure purposes - Part 4: Weldable fine grain steels with high
proof strength
EN 10216-2:2013+A1:2019, Seamless steel tubes for pressure purposes - Technical delivery conditions -
Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties
EN 10216-5:2021, Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 5:
Stainless steel tubes
EN 10217-3:2019, Welded steel tubes for pressure purposes - Technical delivery conditions - Part 3: Electric
welded and submerged arc welded alloy fine grain steel tubes with specified room, elevated and low
temperature properties
EN 10217-7:2021, Welded steel tubes for pressure purposes - Technical delivery conditions - Part 7:
Stainless steel tubes
EN 13445-3:2021, Unfired pressure vessels - Part 3: Design
EN ISO 3452-1:2021, Non-destructive testing - Penetrant testing - Part 1: General principles (ISO 3452-
1:2021)
EN ISO 6892-1:2019, Metallic materials - Tensile testing - Part 1: Method of test at room temperature (ISO
6892-1:2019)
EN ISO 11666:2018, Non-destructive testing of welds - Ultrasonic testing - Acceptance levels (ISO
11666:2018)
EN ISO 17640:2018, Non-destructive testing of welds - Ultrasonic testing - Techniques, testing levels, and
assessment (ISO 17640:2018)

4

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SIST EN 1092-1:2018/oprA1:2022
EN 1092-1:2018/prA1:2022 (E)
3 Modifications to Table 7
Replace Table 7:
Table 7 — Synoptic table
DN
Flange type or collar type
PN
  dimensions identical with PN 6 X
 2,5
 6 X X X X X X X X X X X X X X X X X X X  X X X X X X X X X X
dimensions identical with dimensions identical with
 10 X X X X X X X X X X X X X
PN 40 PN 16
dimensions identical with
 16 X X X X X X X X X X X X X X X X X
PN 40

a) Type 01
 25 dimensions identical with PN 40 X X X X X X X  X X X
 40 X X X X X X X X X X X X X X X X X
dimensions identical with
 63 X X X X X X X X X X X
PN 100
100 X X X X X X X X X X X X X X X X
 2,5  dimensions identical with PN 6
 6 X X X X X X X X X X X X X X X X X X X  X
dimensions identical with dimensions identical with
 10 X X X X X X X X
PN 40 PN 16
dimensions identical with

 16 X X X X X X X X X X X X X X
PN 40
b) Types 02 and 32
 25 dimensions identical with PN 40 X X X X X X X  X
 40 X X X X X X X X X X X X X X X X X X X  X
 2,5  dimensions identical with PN 6
 6 X X X X X X X X X X X X X X X X X X X  X X X X X X
dimensions identical with dimensions identical with
 10 X X X X X X X X X X X X X
PN 40 PN 16
5
10
15
20
25
32
40
50
65
80
100
125
150
200
250
300
350
400
450
500

600
700
800
900
1 000
1 200
1 400
1 600
1 800
2 000
2 200
2 400
2 600
2 800
3 000
3 200
3 400
3 600
3 800
4 000

---------------------- Page: 7 ----------------------
SIST EN 1092-1:2018/oprA1:2022
EN 1092-1:2018/prA1:2022 (E)
DN
Flange type or collar type
PN
dimensions identical with
 16 X X X X X X X X X X X X X X X X X
X
PN 40
 25 dimensions identical with PN 40 X X X X X X X X  X X X


 40 X X X X X X X X X X X X X X X X X
c) Types 02 and 35
 2,5 dimensions identical with PN 6
6 X X X X X X X X X X X X X X X X X X X
 10 dimensions identical with PN 16 X X X X X


 16 X X X X X X X X X X X X X X X X X
d) Type 02 and 36
dimensions
dimensions identical with PN 16 identical with
 2,5
PN 10
dimensions
  6 dimensions identical with PN 16 identical with
PN 10
e) Type 02 and 33/37
 10 dimensions identical with PN 16 X X X
 16 X X X X X X X X X X X X X

dimensions identical with dimensions identical with
 10 X X X X X X X X
PN 40 PN 16
dimensions identical with
 16 X X X X X X X X X X X X X X
PN 40

 25 dimensions identical with PN 40 X X X X X X X  X
f) Type 04 and 34
 40 X X X X X X X X X X X X X X X X X
 63
100
6
10
15
20
25
32
40
50
65
80
100
125
150
200
250
300
350
400
450
500

600
700
800
900
1 000
1 200
1 400
1 600
1 800
2 000
2 200
2 400
2 600
2 800
3 000
3 200
3 400
3 600
3 800
4 000

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SIST EN 1092-1:2018/oprA1:2022
EN 1092-1:2018/prA1:2022 (E)
DN
Flange type or collar type
PN
 2,5  dimensions identical with PN 6 X
 6 X X X X X X X X X X X X X X X X X X X  X X X X X X X X X X
dimensions identical with dimensions identical with
 10 X X X X X X X X X X X X X
PN 40 PN 16
dimensions identical with
 16 X X X X X X X X X X X X X X X X X X
PN 40
 25 dimensions identical with PN 40 X X X X X X X  X
 40 X X X X X X X X X X X X X X X X X X X  X
 63 Use PN 100 X X X X X X X X X X X
100 X X X X X X X X X X X X X X X X
 160 X X  X  X X X X X X X X X X
g) Type 05

250 X  X  X X X X X X X X X
320 X X  X  X X X X X X X X X
400 X X  X  X X X X X X X X
 2,5  dimensions identical with PN 6 X X X X X X X X X X X X X X X X X
 6 X X X X X X X X X X X X X X X X X X X  X X X X X X X X X X X X X X X X X X
dimensions identical with dimensions identical with
  10 X X X X X X X X X X X X X X X X X X X X X X
PN 40 PN 16
h) Type 11
dimensions identical with
 16 X X X X X X X X X X X X X X X X X X X X X X
X
PN 40
7
dimensions identical with PN 10

15
20
25
32
40
50
65
80
100
125
150
200
250
300
350
400
450
500

600
700
800
900
1 000
1 200
1 400
1 600
1 800
2 000
2 200
2 400
2 600
2 800
3 000
3 200
3 400
3 600
3 800
4 000

---------------------- Page: 9 ----------------------
SIST EN 1092-1:2018/oprA1:2022
EN 1092-1:2018/prA1:2022 (E)
DN
Flange type or collar type
PN
 25 dimensions identical with PN 40 X X X X X X X  X X X X X
 40 X X X X X X X X X X X X X X X X X X X  X
dimensions identical with
 63 X X X X X X X X X X X
PN 100
100 X X X X X X X X X X X X X X X X
160 X X  X  X X X X X X X X X X

250 X  X  X X X X X X X X X
320 X X  X  X X X X X X X X X
400 X X  X  X X X X X X X X
 6 X X X X X X X X X X X X X X X
dimensions identical with dimensions identical with
 10 X X X X X X X X
PN 40 PN 16
dimensions identical with
 16 X X X X X X X X X X X X X X X X X X
PN 40

 25 dimensions identical with PN 40 X X X X X X X  X
i) Type 12
 40 X X X X X X X X X X X X X X X X X X X  X
dimensions identical with
 63 X X X X X X
PN 100
100 X X X X X X X X X X X X
8
dimensions identical with PN 10

15
20
25
32
40
50
65
80
100
125
150
200
250
300
350
400
450
500

600
700
800
900
1 000
1 200
1 400
1 600
1 800
2 000
2 200
2 400
2 600
2 800
3 000
3 200
3 400
3 600
3 800
4 000

---------------------- Page: 10 ----------------------
SIST EN 1092-1:2018/oprA1:2022
EN 1092-1:2018/prA1:2022 (E)
DN
Flange type or collar type
PN
 6 X X X X X X X X X X X X
dimensions identical with dimensions identical with
 10
PN 40 PN 16
dimensions identical with
 16 X X X X X X
PN 40

 25 dimensions identical with PN 40
j) Type 13
 40 X X X X X X X X X X X X
dimensions identical with
 63 X X X X X X
PN 100
100 X X X X X X X X X X X X
 2,5 X X X X X X X X X X X X X X X X X X X  X X X X X
 6 X X X X X X X X X X X X X X X X X X X  X X X X X X X X X X
dimensions identical with dimensions identical with
 10 X X X X X X X X X X X X X X X X X
PN 40 PN 16
dimensions identical with
 16 X X X X X X X X X X X X X X X X X X X X X X X
PN 40
 25 dimensions identical with PN 40 X X X X X X X  X X X X X
 40 X X X X X X X X X X X X X X X X X X X  X

dimensions identical with
 63 X X X X X X X X X X X
k) Type 21
PN 100
100 X X X X X X X X X X X X X X X X
160 X X  X  X X X X X X X X X X
250 X X  X  X X X X X X X X X X
320 X X  X  X X X X X X X X X
400 X X  X  X X X X X X X X
9
10
15
20
25
32
40
50
65
80
100
125
150
200
250
300
350
400
450
500

600
700
800
900
1 000
1 200
1 400
1 600
1 800
2 000
2 200
2 400
2 600
2 800
3 000
3 200
3 400
3 600
3 800
4 000

---------------------- Page: 11 ----------------------
SIST EN 1092-1:2018/oprA1:2022
EN 1092-1:2018/prA1:2022 (E)
4 Modifications to Figure 5
Replace Figure 5:






a) b) Type 01 c)Type 05 d) Type 11 e) Type 02 and 35 f) Type 02 and 36 g) Type 02 and 37
This diagram illustrates the
arrangement but not necessarily the
correct number of bolt holes.
Refer to the column “Bolting
Number” in Table 10 for the actual
number.


   h) Type 21
NOTE 1 Dimension N1 is measured at the intersection of the hub draft angle and the back face of the flange.
NOTE 2 For dimension Gmax, refer to NOTE 1 of 5.6.1.
Figure 5 — Dimensions of PN 2,5 flanges
10

---------------------- Page: 12 ----------------------
SIST EN 1092-1:2018/oprA1:2022
EN 1092-1:2018/prA1:2022 (E)
5 Modifications to Figure 6
Replace Figure 6:


a) b) Type 01 c) Type 02 and 32 d) Type 02 and 33 e) Type 02 and 35 f) Type 02 and 36 g) Type 02 and 37
This diagram illustrates the
arrangement but not necessarily the
correct number of bolt holes.
Refer to the column “Bolting Number”
in Table 11 for the actual number.


 h) Type 05 i) Type 11 j) Type 12 k) Type 13 l) Type 21
NOTE 1 Dimensions N1, N2 and N3 are measured at the intersection of the hub draft angle and the back face of the flange.
NOTE 2 For dimension d1, see Table 8.
NOTE 3 For dimensions G refer to NOTE 1 of 5.6.1.
max
NOTE 4 Type 33; lapped pipe end without determination of thickness and height.
Figure 6 — Dimensions of PN 6 flanges
11

---------------------- Page: 13 ----------------------
SIST EN 1092-1:2018/oprA1:2022
EN 1092-1:2018/prA1:2022 (E)
6 Modifications to Figure 7
Replace Figure 7:



a) b) Type 01 c) Type 02 and 32 d) Type 02 and 33 e) Type 02 and 35 f) Type 02 and 36 g) Type 02 and 37
This diagram illustrates the
arrangement but not
necessarily the correct number
of bolt holes.
Refer to the column “Bolting
Number” in Table 12 for the
actual number.


 h) Type 04 and 34 i) Type 05 j) Type 11 k) Type 12 l) Type 13 m) Type 21
NOTE 1 Dimensions N , N and N are measured at the intersection of the hub draft angle and the back face of the flange.
1 2 3
NOTE 2 For dimension d1, see Table 8.
NOTE 3 For dimensions Gmax refer to NOTE 1 of 5.6.1.
NOTE 4 Type 33; lapped pipe end without determination of thickness and height.
Figure 7 — Dimensions of PN 10 flanges
12

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...

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The selection is based on commonly used materials, bolts and nuts. It covers temperature ranges of the general service of standard flanges (based on PN or Class).
NOTE 1   The bolting selection given may be used in combination with non-standard flanges too provided that the range of application of the equipment for which the bolting is intended to be used is covered. It is the purchaser's option to decide on this.
When selecting bolting according to this European Standard it is essential to take into account other parameters such as type of fluids, corrosion hazards and relaxation at elevated temperatures.
The purpose of this European Standard is to provide a selection of most commonly used bolting types and bolting material combinations as well a tool for easy selection of suitable bolting for equipment.
It is not the intention to specify all possible applications but to give guidance on the most commonly applications. According to this, e.g. application limits for material in the creep range are not explicitly covered in this European Standard but some bolting materials listed (see Table 3, footnote h) are suitable to be used in this temperature range. Wherever the starting material standard provides mechanical properties for this temperature range respective reference is made in Table 3.
NOTE 2   Special services and ambient conditions may require the application of coatings. It is the purchaser's option to decide on this. Depending on the coating used, a verification of the temperature ranges

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SIST
SIST EN 14772:2021(Main)
Flanges and their joints - Quality assurance inspection and testing of gaskets in accordance with the series of standards EN 1514 and EN 12560
EN 14772:2021

This document specifies the quality assurance procedures that are applicable to ensure that delivered gaskets comply with the relevant product standards. This document sets down procedures by which a user can have confidence that the salient features of each batch of gaskets or gasket materials delivered to him will be constant.
The gasket types covered by this document are those that are within the scope of the series of standards
EN 1514 and EN 12560 and are simultaneously within the scope of the series of standards EN 1591. An exception is those gaskets intended solely for domestic fluids (like water, waste water ...) which are based on rubber with or without reinforcement like fillers and/or inserts.

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SIST
SIST EN 13555:2021(Main)
Flanges and their joints - Gasket parameters and test procedures relevant to the design rules for gasketed circular flange connections
EN 13555:2021

This European Standard specifies the gasket parameters required by EN 1591 1 and provides the test procedures for establishing the values of these parameters.
Gaskets which are wholly based upon elastomers, or based upon elastomers with only the inclusion of particulate fillers or particulate reinforcement, as opposed to gaskets combining elastomers, fillers and fibrous reinforcement, are beyond the scope of this document.
NOTE   The testing procedures given might be applicable to gaskets of other shapes and dimensions.

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SIST
SIST EN 1514-2:2014+A1:2021(Main)
Flanges and their joints - Gaskets for PN-designated flanges - Part 2: Spiral wound gaskets for use with steel flanges
EN 1514-2:2014+A1:2021

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.

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SIST
SIST-TP CEN/TR 1591-2:2020(Main)
Flanges and their joints - Design rules for gasketed circular flange connections - Part 2: Gasket parameters
CEN/TR 1591-2:2020

This document details generic gasket parameters for use in EN 1591-
1 during preliminary calculations during which the type of gasket to be
used in an application is to be decided. Once the gasket type has
been decided the parameters for gaskets of that type from the
different potential commercial suppliers should be used in further
calculations as within a gasket type there will be differences
depending upon the supplier.

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SIST EN 1092-1:2018(Main)
Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges
EN 1092-1:2018

This draft European Standard for a single series of flanges specifies requirements for circular steel flanges in PN designations PN 2,5 to PN 400 and nominal sizes from DN 10 to DN 4000.
This draft European Standard specifies the flange types and their facings, dimensions, tolerances, threading, bolt sizes, flange jointing face surface finish, marking, materials, pressure/ temperature ratings and approximate flange masses.
For the purpose of this draft European Standard, "flanges" include also lapped ends and collars.
This draft European Standard applies to flanges manufactured in accordance with the methods described in Table 1.
Non-gasketed pipe joints are outside the scope of this draft European Standard.

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SIST EN 1591-1:2014(Main)
Flanges and their joints - Design rules for gasketed circular flange connections - Part 1: Calculation
EN 1591-1:2013

This European Standard defines a calculation method for bolted, gasketed, circular flange joints. Its purpose is to ensure structural integrity and control of leak tightness. It uses gasket parameters based on definitions and test methods specified in EN 13555. The calculation method is not applicable to joints with a metallic contact out of the sealing face or to joints whose rigidity varies appreciably across gasket width. For gaskets in incompressible materials, which permit large deformations, the results given by the calculation method can be excessively conservative (i.e. required bolting load too high, allowable pressure of the fluid too low, required flange thickness too large, etc.).

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SIST EN 13083:2009+A1:2013(Main)
Tanks for transport of dangerous goods - Service equipment for tanks - Adaptor for bottom loading and unloading
EN 13083:2008+A1:2013

This European Standard covers externally actuated and self actuated adaptors for bottom loading and unloading. This European Standard specifies the performance requirements and the critical dimensions of the adaptor for bottom loading and unloading. It also specifies the tests necessary to verify the compliance of the equipment with this European Standard. The equipment specified by this standard is suitable for use with liquid petroleum products and other dangerous substances of Class 3 of ADR [2] which have a vapour pressure not exceeding 110 kPa at 50 °C and petrol, and which have no subclassification as toxic or corrosive.

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