SIST EN 4182:2004
(Main)Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees, reduced
Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees, reduced
This standard specifies the characteristics of tees, reduced, 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, reduziert
Diese Norm legt die Eigenschaften von T-Verschraubungen, reduziert, 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 - Systeme de raccordement 8°30' en alliage de titane - Raccords en té, réduits
La présente norme spécifie les caractéristiques des raccords en té, réduits, 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, reduced
General Information
Overview
SIST EN 4182:2004 is a European standard developed by CEN that specifies the technical and design characteristics of reduced tees used in aerospace pipe couplings with an 8°30' angle, manufactured from titanium alloy. This standard targets aerospace applications requiring high-performance fluid system components capable of withstanding demanding operational conditions. The standard ensures consistency, compatibility, and reliability of these specialized pipe fittings across the aerospace industry.
Key Specifications:
- Material: Titanium alloy compliant with EN 3311, EN 3312, EN 3314, or EN 3315
- Nominal Pressure: Up to 28,000 kPa
- Operating Temperature Range: From -55 °C to 135 °C
- Thread Type: MJ threads based on ISO 5855-3
- Surface Treatment: Lubrication according to EN 2491, abrasive blasting before lubricant application
Key Topics
Design and Dimensions
The standard provides detailed geometric parameters for reduced tees including thread connections and sealing surfaces. It includes specific dimensional values for pipe couplings according to different nominal diameters and thread codes. The focus is on maintaining strict tolerances to guarantee proper fit and function in aerospace fluid systems.
Material and Surface Quality
The use of titanium alloy ensures lightweight and corrosion-resistant components. The standard mandates treatments such as surface roughness limits and internal surface finishing with a radius from 0.3 mm to 1.0 mm and a roughness of 0.8 µm to optimize durability and sealing integrity. Lubrication coatings must have a film thickness between 0.005 mm and 0.013 mm.
Marking and Identification
Marking requirements align with EN 2424 to ensure traceability and compliance. Each tee fitting must be clearly identified with standardized markings for manufacturer identification, part number, and material grade.
Mass and Configuration
Mass tables for different tee configurations and connection sizes help manufacturers and engineers calculate weight precisely for system design and balance. Two version types are specified based on different connection arrangements.
Applications
SIST EN 4182:2004 tees are primarily intended for aerospace fluid systems where reliability and safety are critical. Their high-pressure rating and temperature tolerance make them suitable for:
- Airframe hydraulic systems
- Fuel and lubrication lines in aircraft engines
- High-performance aerospace pneumatic systems
- Structural fuel or fluid conveyance in space vehicles
The titanium alloy construction offers benefits of low weight and high corrosion resistance, essential for aerospace environments exposed to varying pressures and temperatures.
Related Standards
This standard references and complements a number of other aerospace specifications to provide a consistent framework for pipe couplings and components:
- ISO 5855-3: Limits for MJ thread fittings used in aerospace fluid systems
- EN 2424: Marking requirements for aerospace products
- EN 2491: Coating methods for molybdenum disulphide dry lubricants
- EN 3274 & EN 3275: Geometric configuration and technical specifications for 8°30' pipe couplings
- EN 3311 to EN 3315: Specifications for titanium alloy bars and forgings used in aerospace components
Adhering to SIST EN 4182:2004 alongside these referenced standards ensures high-quality manufacturing, interchangeability of parts, and long-term performance in aerospace piping systems.
Keywords: EN 4182 standard, aerospace pipe coupling, titanium alloy tees, pipe fitting aerospace, reduced tees, aerospace fluid systems, high-pressure pipe fittings, titanium coupling aerospace, 8°30 pipe coupling, aerospace connector standards, EN 4182 specification
Frequently Asked Questions
SIST EN 4182:2004 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, reduced". This standard covers: This standard specifies the characteristics of tees, reduced, 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, reduced, 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 4182:2004 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.
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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, reducedLuft- und Raumfahrt - Rohrverschraubung 8°30' aus Titanlegierung - T-Verschraubungen, reduziertSérie aérospatiale - Systeme de raccordement 8°30' en alliage de titane - Raccords en té, réduitsAerospace series - Pipe coupling 8°30' in titanium alloy - Tees, reduced49.080Aerospace fluid systems and componentsICS:Ta slovenski standard je istoveten z:EN 4182:2001SIST EN 4182:2004en01-maj-2004SIST EN 4182:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 4182October 2001ICS 49.080English versionAerospace series - Pipe coupling 8°30' in titanium alloy - Tees,reducedSérie aérospatiale - Système de raccordement 8°30' enalliage de titane - Raccords en té, réduitsLuft- und Raumfahrt - Rohrverschraubung 8°30' ausTitanlegierung - T-Verschraubungen, reduziertThis European Standard was approved by CEN on 28 February 2001.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 4182:2001 ESIST EN 4182:2004
ScopeThis standard specifies the characteristics of tees, reduced, for pipe couplings 8°30', in titanium alloy, for aerospaceapplications.Nominal pressure: up to 28 000 kPaTemperature range:
55 °C to 135 °C2
Normative referencesThis Standard incorporates, by dated or undated reference provisions from other publications. These normative referencesare cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequentamendments to or revisions of any of these publications apply to this European Standard only when incorporated in it byamendment or revision. For undated references, the latest edition of the publication referred to applies (includingamendments).ISO 5855-3,
Aerospace series — MJ threads — Part 3: Limit dimensions for fittings for fluid systems.EN 2424,
Aerospace series — Marking of aerospace products.EN 2491,
Aerospace series — Molybdenum disulphide dry lubricants — Coating methods.EN 3274,
Aerospace series — Pipe coupling 8°30' — Thread ends — Geometric configuration.EN 3275,
Aerospace series — Pipe coupling 8°30' up to 28 000 kPa — Dynamic beam seal — Metric series — Technicalspecification.EN 3311,
Aerospace series — Titanium alloy TI-P64001 — Annealed — Bar for machining — D £ 150 mm.1)EN 3312,
Aerospace series — Titanium alloy TI-P64001 — Grade 2 — Annealed — Forgings — De £ 150 mm.1)EN 3314,
Aerospace series — Titanium alloy TI-P64001 — Solution treated and aged — Bar for machining —D £ 75 mm.1)EN 3315,
Aerospace series — Titanium alloy TI-P64001 — Solution treated and aged — Forgings — De £ 75 mm.1)3
Required characteri
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