SIST EN 4816:2017

SLOVENSKI STANDARD
SIST EN 4816:2017
01-oktober-2017
$HURQDYWLND3ULUREQLþQHVSRMNH5REQDWHVQLOD]QLNOMHYR]OLWLQR7HKQLþQD
VSHFLILNDFLMD3DOþQHPHUH
Aerospace series - Flange couplings - Gasket seal with nickel alloy C seal - Technical
specification - Inch series
Luft- und Raumfahrt - Rohrverschraubung mit Flanschen - Flachdichtung aus
Nickellegierung mit Armierung - Technische Lieferbedingung - Inch-Reihe
Série aérospatiale - Raccordement à bride - Joint plaque avec joint C en alliage de nickel
- Spécification technique - Série en inches
Ta slovenski standard je istoveten z: EN 4816:2017
ICS:
23.040.60 Prirobnice, oglavki in spojni Flanges, couplings and joints
elementi
49.080 /HWDOVNLLQYHVROMVNL Aerospace fluid systems and
KLGUDYOLþQLVLVWHPLLQGHOL components
SIST EN 4816:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 4816:2017

---------------------- Page: 2 ----------------------

SIST EN 4816:2017


EN 4816
EUROPEAN STANDARD

NORME EUROPÉENNE

May 2017
EUROPÄISCHE NORM
ICS 49.080
English Version

Aerospace series - Flange couplings - Gasket seal with
nickel alloy C seal - Technical specification - Inch series
Série aérospatiale - Raccordement à bride - Joint Luft- und Raumfahrt - Rohrverschraubung mit
plaque avec joint C en alliage de nickel - Spécification Flanschen - Flachdichtung aus Nickellegierung mit
technique - Série en inches Armierung - Technische Lieferbedingung - Inch-Reihe
This European Standard was approved by CEN on 7 November 2016.

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: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4816:2017 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN 4816:2017
EN 4816:2017 (E)
Contents
Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions. 4
3.1 Pressure . 5
3.2 Coupling and assembling . 5
3.3 Surface defects . 6
3.4 Quality assurance . 6
4 Requirements, inspection and test methods . 7
4.1 Test conditions and preparation of specimens for qualification . 7
4.1.1 Tests fluids . 7
4.1.2 Pipe junction . 7
4.1.3 Assembling . 7
4.1.4 Pressurizing. 7
4.1.5 Ageing . 8
4.1.6 Pressurizing. 8
5 Quality assurance . 9
5.1 Product qualification . 9
5.2 Quality control records . 10
5.3 Acceptance conditions . 10
5.4 Rejection . 11
5.5 Purchaser's (user's) quality control . 11
6 Preparation for delivery . 11
6.1 Cleaning. 11
6.2 Preservation and packaging . 11
7 Storage . 12
(normative) Test assembly for ageing and pressure testing . 13
(normative) Inspection during assembly . 14
(normative) Ageing and pressurizing tests . 15

2

---------------------- Page: 4 ----------------------

SIST EN 4816:2017
EN 4816:2017 (E)
European foreword
This document (EN 4816:2017) has been prepared by the Aerospace and Defence Industries Association of
Europe - Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received the approval of the National Associations and the Official Services of the member countries of ASD,
prior to its presentation to CEN.
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 2017 and conflicting national standards shall be
withdrawn at the latest by November 2017.
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.
According to the CEN-CENELEC Internal Regulations, the national standards organizations 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.
3

---------------------- Page: 5 ----------------------

SIST EN 4816:2017
EN 4816:2017 (E)
1 Scope
This standard specifies the required characteristics, inspection and test methods, quality assurance and
procurement requirements for inch series, gasket seal with C seal in nickel alloy, for temperature ranges
from type II to type V according to ISO 6771 and nominal pressure up to 10 500 kPa (class B according to
ISO 6771).
In addition to the requirements of this technical specification, the coupling assemblies shall be qualified in
accordance with equipment or component specification requirements.
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 2951, Aerospace series — Metallic materials — Test method — Micrographic determination of content of
1)
non-metallic inclusions
EN 9133, Aerospace series — Quality management systems — Qualification procedure for aerospace standard
parts
EN 10204, Metallic products — Types of inspection documents
ISO 468, Surface roughness — Parameters, their values and general rules for specifying requirements
ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection
ISO 6771, Aerospace — Fluid systems and components — Pressure and temperature classifications
ISO 8625-1, Aerospace — Fluid systems — Vocabulary — Part 1: General terms and definitions related to
pressure
TR 2674, Aerospace series — Design and construction of pipeline for fluids in liquid or gaseous condition —
2)
Rigid lines, installation
2)
TR 4815, Aerospace series — Flange couplings up to 21 000 kPa — Design standard — Inch series
MIL-PRF-23699, Lubricating oil, aircraft turbine engine, synthetic base, NATO code numbers: O-152, O-154,
3)
O-156, and O-157
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

1)
Published as ASD-STAN Prestandard at the date of publication of this standard. (http://www.asd-stan.org/)
2)
Published as ASD-STAN Technical Report at the date of publication of this standard. (http://www.asd-stan.org/)
3)
Published by: DoD National (US) Mil. Department of Defense. (http://www.defenselink.mil/)
4

---------------------- Page: 6 ----------------------

SIST EN 4816:2017
EN 4816:2017 (E)
3.1 Pressure
Nominal pressure, proof pressure, impulse pressure, burst pressure according to ISO 8625-1.
Maximum operating pressure depends on the seal use in the assembly.
3.2 Coupling and assembling
3.2.1
coupling assembly
assembled ferrule, loose flange, bolts and pipe mating with e. g. equipment (see Figure 1)

Key
1 Bolts
2 Swivel flange
3 Tube
4 Coupling
5 Seal
6 Port connection on case or equipment
Figure 1 — Example of coupling assembly
3.2.2
dimensional code
th
is composed with the nominal diameter given in 16 of inches within two (2) digit and additional digit when
necessary to describe the size of a fluid system component and other configuration options
5

---------------------- Page: 7 ----------------------

SIST EN 4816:2017
EN 4816:2017 (E)
3.3 Surface defects
3.3.1
surface irregularity
nonconformity with general surface appearance, possible defect
3.3.2
crack
clean (crystalline) fracture passing through or across the grain boundaries that possibly follows inclusions of
foreign elements
Note 1 to entry: Cracks are normally caused by overstressing the metal during forging or other forming operations,
or during heat treatment.
Note 2 to entry: Where parts are subject to significant reheating, cracks are usually discoloured by scale.
3.3.3
fold
doubling over of metal, which can occur during the forging operation
Note 1 to entry: Folds can occur at or near the intersection of diameter changes and are especially prevalent with
non-circular necks, shoulders and heads.
3.3.4
lap
fold-lik
...