SIST EN 4556:2004

SLOVENSKI STANDARD
01-maj-2004
Aerospace series - Pipe coupling 37°, in heat resisting steel - Cap assemblies- Inch
series
Aerospace series - Pipe coupling 37°, in heat resisting steel - Cap assemblies- Inch
series
Luft- und Raumfahrt - Rohrverschraubung 37° aus hochwarmfestem Stahl -
Verschlusseinheiten - Inch-Reihe
Série aérospatiale - Systeme de raccordement 37°, en acier résistant a chaud -
Ensembles d'obturation - Série inch
Ta slovenski standard je istoveten z: EN 4556:2003
ICS:
49.080 /HWDOVNLLQYHVROMVNL Aerospace fluid systems and
KLGUDYOLþQLVLVWHPLLQGHOL components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 4556
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2003
ICS 49.080
English version
Aerospace series - Pipe coupling 37°, in heat resisting steel -
Cap assemblies- Inch series
Série aérospatiale - Système de raccordement 37°, en
acier résistant à chaud - Ensembles d'obturation - Série
inch
This European Standard was approved by CEN on 14 September 2002.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovak Republic, Spain, Sweden, Switzerland and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4556:2003 E
worldwide for CEN national Members.

Contents
Foreword.3
1 Scope .3
2 Normative references .3
3 Required characteristics.4
3.1 Configuration – Dimensions – Tolerances – Masses.4
3.2 Materials.4
3.3 Surface treatment .4
3.4 Cap .5
4 Cap assembly.6
5 Designation.7
6 Marking .7
7 Technical specification .7
Foreword
This document EN 4556:2003 has been prepared by the European Association of Aerospace Manufacturers
(AECMA).
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 AECMA, 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 August 2003, and conflicting national standards shall be withdrawn at the latest by
August 2003.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard : Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,
Slovakia, Spain, Sweden, Switzerland and United Kingdom.
1 Scope
This standard specifies the characteristics of cap assemblies for inch series pipe couplings, 37°, in heat resisting
steel, for aerospace applications.
Mateable with EN 4552, EN 4553 or EN 4554
Nominal pressure : Class D in accordance with ISO 6771
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
n
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