Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees branch with thrust wire nut

This standard specifies the characteristics of tees, branch, with thrust wire nut, for pipe couplings 8 30', in titanium alloy,
for aerospace applications.
Nominal pressure: up to 28 000 kPa
Temperature range:   55  C to 135  C

Luft- und Raumfahrt - Rohrverschraubung 8°30' aus Titanlegierung - T-Verschraubungen seitlicher Auslass mit Mutter mit Schubdraht

Diese Norm legt die Eigenschaften von T-Verschraubungen, seitlicher Auslass mit Mutter mit Schubdraht, für
Rohrverschraubungen 8 30', aus Titanlegierung, zur Verwendung in der Luft- und Raumfahrt fest.
Nenndruck: bis 28 000 kPa
Temperaturbereich:   55 °C bis 135 °C

Série aérospatiale - Système de raccordement 8°30' en alliage de titane - Raccords en té avec écrou à jonc en pied

La présente norme spécifie les caractéristiques des raccords en té avec écrou à jonc en pied, pour les systèmes de
raccordement 8°30', en alliage de titane, pour applications aérospatiales.
Pression nominale: jusqu'à 28 000 kPa
Plage de température:   55 °C à 135 °C

Aerospace series - Pipe coupling 8-30' in titanium alloy - Tees branch with thrust wire nut

General Information

Status
Published
Publication Date
18-Sep-2001
Withdrawal Date
30-Mar-2002
Technical Committee
ASD-STAN - Aerospace
Drafting Committee
ASD-STAN/D 3 - Mechanical
Current Stage
9093 - Decision to confirm - Review Enquiry
Start Date
31-May-2017
Completion Date
21-Jan-2026

Relations

Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026

Overview

EN 4027:2001 (Aerospace series) specifies the characteristics of tees (branch) with thrust wire nut for pipe coupling 8°30' manufactured in titanium alloy for aerospace applications. Published by CEN and prepared by AECMA, this standard sets configuration, dimensional, material, surface and marking requirements for components intended to operate at a nominal pressure up to 28 000 kPa and a temperature range 55 °C to 135 °C (as published).

Key topics and technical requirements

  • Scope & ratings: Covers tee branch fittings for 8°30' pipe couplings in titanium alloy; maximum nominal pressure 28 000 kPa.
  • Configuration & dimensions: Detailed geometry, across-flats, radii and dimensional codes are provided (figure and table in the standard) with mass values per code; dimensions apply before lubrication.
  • Threads & fits: Threads follow aerospace MJ thread limits (ISO 5855-3) and related EN geometric configurations (EN 3273, EN 3274).
  • Materials: Titanium alloy requirements reference EN 3311 / EN 3312 / EN 3314 / EN 3315 (TI‑P64001 variants).
  • Surface finish & internal finishing: Internal radius R = 0.3 to 1.0 mm and surface roughness target 0.8 µm; hand deburring is not permitted.
  • Surface treatment & lubrication: Lubrication per EN 2491 on threads, sealing faces and thrust wire contact area; abrasive blasting with non‑metallic grit prior to lubricant; film thickness 0.005–0.013 mm.
  • Thrust wire & nuts: Thrust wire and nut interfaces reference EN 4032 and EN 3264 respectively.
  • Marking & technical specification: Marking per EN 2424 (style A); technical qualification/acceptance to EN 3275 (type II).

Applications and who uses it

  • Primary users: aerospace design engineers, fluid system designers, aircraft component manufacturers, quality/standards engineers, procurement/specification teams, and maintenance organizations.
  • Typical uses: specifying and procuring titanium tee branch fittings for hydraulic, pneumatic and fluid distribution systems on aircraft where high pressure, weight savings and corrosion resistance are required.
  • Benefits: ensures interchangeability, reliable sealing and mechanical performance in aerospace fluid systems by standardizing geometry, materials and surface treatments.

Related standards

Normative references include: ISO 5855-3, EN 2424, EN 2491, EN 3264, EN 3273, EN 3274, EN 3275, EN 3311/3312/3314/3315, EN 4032.

Keywords: EN 4027, aerospace series, pipe coupling 8°30', titanium alloy, tees branch, thrust wire nut, aerospace fluid systems, MJ threads.

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Frequently Asked Questions

EN 4027:2001 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees branch with thrust wire nut". This standard covers: This standard specifies the characteristics of tees, branch, with thrust wire nut, for pipe couplings 8 30', in titanium alloy, for aerospace applications. Nominal pressure: up to 28 000 kPa Temperature range: 55 C to 135 C

This standard specifies the characteristics of tees, branch, with thrust wire nut, for pipe couplings 8 30', in titanium alloy, for aerospace applications. Nominal pressure: up to 28 000 kPa Temperature range: 55 C to 135 C

EN 4027:2001 is classified under the following ICS (International Classification for Standards) categories: 49.080 - Aerospace fluid systems and components. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 4027:2001 has the following relationships with other standards: It is inter standard links to EN 3311:2023, EN 3264:2018, EN 2491:2011, EN 3274:2010. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN 4027:2001 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
01-januar-2002
Aerospace series - Pipe coupling 8-30' in titanium alloy - Tees branch with thrust
wire nut
Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees branch with thrust wire nut
Luft- und Raumfahrt - Rohrverschraubung 8°30' aus Titanlegierung - T-Verschraubungen

seitlicher Auslass mit Mutter mit Schubdraht
Série aérospatiale - Systeme de raccordement 8°30' en alliage de titane - Raccords en
té avec écrou a jonc en pied
Ta slovenski standard je istoveten z: EN 4027:2001
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 4027
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2001
ICS 49.080
English version
Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees
branch with thrust wire nut
Série aérospatiale - Système de raccordement 8°30' en Luft- und Raumfahrt - Rohrverschraubung 8°30' aus
alliage de titane - Raccords en té avec écrou à jonc en pied Titanlegierung - T-Verschraubungen seitlicher Auslaß mit
Mutter mit Schubdraht
This European Standard was approved by CEN on 29 December 2000.
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,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, 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
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4027:2001 E
worldwide for CEN national Members.

Foreword
This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA).
After inquiries 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 March 2002, and conflicting national standards shall be withdrawn at the latest by March
2002.
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, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United
Kingdom.
1 Scope
This standard specifies the characteristics of tees, branch, with thrust wire nut, for pipe couplings 8°30', in titanium alloy,
for aerospace applications.
Nominal pressure: up to 28 000 kPa
Temperature range:  55 °C to 135 °C
2 Normative references
This European Standard incorporates by dated or undated reference provisions from other publications. These normative
references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references,
subsequent amendments to or revisions of any of these publications apply to
...

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