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

This standard specifies the characteristics of tees, with thrust wire nut on run, 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 T-Durchgang mit Mutter mit Schubdraht

Diese Norm legt die Eigenschaften von T-Verschraubungen, T-Durchgang mit Mutter mit Schubdraht, für Rohrver-
schraubungen 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 - Systeme de raccordement 8°30' en alliage de titane - Raccords en té avec écrou a jonc en ligne

La présente norme spécifie les caractéristiques des raccords en té avec écrou à jonc en ligne, 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 with thrust wire nut on run

General Information

Status
Published
Publication Date
30-Apr-2004
ICS
49.080 - Aerospace fluid systems and components
Technical Committee
I08 - Imaginarni 08
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-May-2004
Due Date
01-May-2004
Completion Date
01-May-2004
Ref Project
EN 4028:2001 - Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees with thrust wire nut on run

Overview

EN 4028:2001 specifies the characteristics and acceptance requirements for tees (T‑pieces) with thrust wire nut on run for the aerospace pipe coupling 8°30' in titanium alloy. Intended for aerospace fluid systems and components, the standard covers mechanical configuration, materials, surface treatment and finishing, marking and technical specification for couplings rated to a nominal pressure up to 28 000 kPa with a temperature range: 55 °C to 135 °C. EN 4028:2001 is published by CEN and prepared by the European Association of Aerospace Manufacturers (AECMA).

Key Topics and Requirements

  • Configuration & dimensions: Detailed geometry, mass and dimensional limits are defined (see figure/table in the standard). Unspecified dimensions may be set by the manufacturer provided compatibility with EN 3275 (type II) is maintained.
  • Threading: Uses aerospace MJ metric thread series (see ISO 5855-3) and related EN geometric definitions (EN 3273, EN 3274).
  • Materials: Titanium alloy requirements referencing EN 3311 / EN 3312 / EN 3314 / EN 3315 (TI‑P64001 variants for bars and forgings).
  • Surface treatment & lubrication: Threads, sealing faces and thrust-wire contact areas require molybdenum‑disulphide dry lubricant per EN 2491 after non‑metallic abrasive blasting; film thickness 0.005 mm to 0.013 mm.
  • Internal finishing: Specified internal radius R = 0.3 mm to 1.0 mm, surface roughness target 0.8 µm; hand deburring is not permitted.
  • Marking & traceability: Marking requirements follow EN 2424 (style A) to ensure identification and conformity.
  • Acceptance & technical spec: Qualification and acceptance to EN 3275 (type II) for dynamic beam seal and sealing performance.

Applications and Users

  • Who uses EN 4028:2001: aerospace design engineers, OEMs, suppliers of fluid system fittings, procurement and quality/inspection teams, and regulatory/certification bodies involved in aircraft hydraulic, fuel and pneumatic lines.
  • Typical applications: design, manufacture, procurement and inspection of titanium tee fittings in high‑pressure aerospace fluid systems where weight, corrosion resistance and high strength are critical.
  • Practical value: ensures interchangeability, traceability, predictable sealing performance and compliance with aerospace material and surface treatment practices.

Related Standards

  • ISO 5855-3 (MJ threads)
  • EN 3275 (pipe coupling technical specification, type II)
  • EN 2491 (dry lubricants)
  • EN 2424 (marking)
  • EN 3311 / EN 3312 / EN 3314 / EN 3315 (titanium alloy material specs)
  • EN 4032 (thrust wires)

Keywords: EN 4028:2001, aerospace pipe coupling 8°30', titanium alloy tees, thrust wire nut, aerospace fittings, nominal pressure 28 000 kPa, temperature 55 °C to 135 °C.

Frequently Asked Questions

SIST EN 4028:2004 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees with thrust wire nut on run". This standard covers: This standard specifies the characteristics of tees, with thrust wire nut on run, 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, with thrust wire nut on run, 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

SIST EN 4028:2004 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.

SIST EN 4028:2004 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)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees with thrust wire nut on runLuft- und Raumfahrt - Rohrverschraubung 8°30' aus Titanlegierung - T-Verschraubungen T-Durchgang mit Mutter mit SchubdrahtSérie aérospatiale - Systeme de raccordement 8°30' en alliage de titane - Raccords en té avec écrou a jonc en ligneAerospace series - Pipe coupling 8°30' in titanium alloy - Tees with thrust wire nut on run49.080Aerospace fluid systems and componentsICS:Ta slovenski standard je istoveten z:EN 4028:2001SIST EN 4028:2004en01-maj-2004SIST EN 4028:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 4028October 2001ICS 49.080English versionAerospace series - Pipe coupling 8°30' in titanium alloy - Teeswith thrust wire nut on runSérie aérospatiale - Système de raccordement 8°30' enalliage de titane - Raccords en té avec écrou à jonc enligneLuft- und Raumfahrt - Rohrverschraubung 8°30' ausTitanlegierung - T-Verschraubungen T-Durchgang mitMutter mit SchubdrahtThis 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 EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 4028:2001 ESIST EN 4028:2004

ScopeThis standard specifies the characteristics of tees, with thrust wire nut on run, for pipe couplings 8°30', in titanium alloy, foraerospace applications.Nominal pressure: up to 28 000 kPaTemperature range:
55 °C to 135 °C2
Normative referencesThis European Standard incorporates by dated or undated reference provisions from other publications. These normativereferences are cited at the appropriate places in the text and the publications are listed hereafter. For dated references,subsequent amen
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