SIST EN 4187:2004
(Main)Aerospace series - Pipe coupling 8°30' in titanium alloy - Elbows 90° bulkhead, long
Aerospace series - Pipe coupling 8°30' in titanium alloy - Elbows 90° bulkhead, long
This standard specifies the characteristics of elbows 90°, bulkhead, long, 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 - Winkel-Schottverschraubungen 90° lange Ausführung
Diese Norm legt die Eigenschaften von Winkel-Schottverschraubungen 90°, lang, 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 coudés a 90° pour traversée de cloison, type long
La présente norme spécifie les caractéristiques des raccords coudés à 90° pour traversée de cloison, type long, 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 to 135 °C
Aerospace series - Pipe coupling 8°30' in titanium alloy - Elbows 90° bulkhead, long
General Information
Overview
EN 4187:2001 - Aerospace series - Pipe coupling 8°30' in titanium alloy - Elbows 90° bulkhead, long defines the characteristics, dimensional data and acceptance requirements for long 90° bulkhead elbows used with 8°30' pipe couplings in titanium alloy for aerospace fluid systems. The standard covers nominal pressure up to 28 000 kPa and a temperature range of 55 °C to 135 °C. It is intended to ensure interchangeability, performance and traceability of critical aerospace pipe fittings.
Key topics and technical requirements
- Configuration and dimensions: Elbow geometry, nominal sizes and masses are given (see Figure 1 / Table 1). Unspecified dimensions may be at manufacturer’s option if EN 3275 Type II qualification and acceptance are met.
- Materials: Titanium alloy requirements referenced to EN 3311 / EN 3312 / EN 3314 / EN 3315 (AECMA titanium alloy specifications).
- Threads: MJ thread forms and limit dimensions per ISO 5855-3 for fittings used in aerospace fluid systems.
- Pressure & temperature rating: Rated for service up to 28 000 kPa and within the stated temperature range.
- Surface finish & internal finishing: External surface roughness per figure; internal radius R = 0.3 mm to 1.0 mm and internal roughness 0.8 µm. Hand deburring is prohibited.
- Surface treatment & lubrication: Abrasive blasting with non‑metallic grit before lubricant application; lubricant film thickness 0.005 mm to 0.013 mm in accordance with EN 2491.
- Marking & traceability: Marking to EN 2424, style A. Designation and identification blocks specified for procurement and maintenance records.
- Installation details & associated parts: Installation references include bulkhead washer per EN 3267 and technical installation dimensions (grip length, thread allowances) shown in figure 2.
- Qualification & acceptance: Technical specification and acceptance follow EN 3275, Type II.
Practical applications and users
- Aerospace designers and systems engineers specifying fluid line components for aircraft and spacecraft.
- Component manufacturers and machinists producing titanium 90° bulkhead elbows and qualified fittings.
- Procurement and supply-chain specialists sourcing certified pipe couplings and elbows to European/AECMA standards.
- Quality, certification and maintenance personnel ensuring parts meet pressure, temperature, marking and surface-treatment requirements.
- Use cases include hydraulic, fuel and other high‑pressure aerospace fluid systems requiring lightweight, corrosion‑resistant titanium fittings.
Related standards
- ISO 5855-3 (MJ thread limits)
- EN 3275 (Pipe coupling 8°30' technical spec)
- EN 2491 (Molybdenum disulphide dry lubricants)
- EN 2424 (Marking of aerospace products)
- EN 3267 (Washers, bulkhead, titanium alloy)
- EN 3311 / EN 3312 / EN 3314 / EN 3315 (Titanium alloy material standards)
Keywords: EN 4187, pipe coupling 8°30', titanium alloy elbow, 90° bulkhead long, aerospace pipe fittings, MJ threads, nominal pressure 28 000 kPa, surface roughness, EN 3275, EN 2491.
Frequently Asked Questions
SIST EN 4187:2004 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Pipe coupling 8°30' in titanium alloy - Elbows 90° bulkhead, long". This standard covers: This standard specifies the characteristics of elbows 90°, bulkhead, long, 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 elbows 90°, bulkhead, long, 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 4187:2004 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 - Elbows 90° bulkhead, longLuft- und Raumfahrt - Rohrverschraubung 8°30' aus Titanlegierung - Winkel-Schottverschraubungen 90° lange AusführungSérie aérospatiale - Systeme de raccordement 8°30' en alliage de titane - Raccords coudés a 90° pour traversée de cloison, type longAerospace series - Pipe coupling 8°30' in titanium alloy - Elbows 90° bulkhead, long49.080Aerospace fluid systems and componentsICS:Ta slovenski standard je istoveten z:EN 4187:2001SIST EN 4187:2004en01-maj-2004SIST EN 4187:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 4187October 2001ICS 49.080English versionAerospace series - Pipe coupling 8°30' in titanium alloy - Elbows90° bulkhead, longSérie aérospatiale - Système de raccordement 8°30' enalliage de titane - Raccords coudés à 90° pour traversée decloison, type longLuft- und Raumfahrt - Rohrverschraubung 8°30' ausTitanlegierung - Winkel-Schottverschraubungen 90° langeAusführungThis 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 4187:2001 ESIST EN 4187:2004
ScopeThis standard specifies the characteristics of elbows 90°, bulkhead, long, for pipe couplings 8°30', in titanium alloy, foraerospace applications.Nominal pressure: up to 28 000 kPaTemperature range:
55 °C to 135 °C2
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