EN 144-3:2003
(Main)Respiratory protective devices - Gas cylinder valves - Part 3: Outlet connections for diving gases Nitrox and oxygen
Respiratory protective devices - Gas cylinder valves - Part 3: Outlet connections for diving gases Nitrox and oxygen
This European Standard is applicable to a thread connection used for the connection between a gas cylinder valve and a pressure reducer for respiratory equipment for diving containing breathable nitrox gas with an oxygen content greater than 22 % or oxygen. This European Standard specifies the dimensions and tolerances for connections which are used for respiratory equipment.
Atemschutzgeräte - Gasflaschenventile - Teil 3: Gewindeverbindungen am Ausgangsstutzen für die Tauchgase Nitrox und Sauerstoff
Appareils de protection respiratoire - Robinets de bouteille à gaz - Partie 3: Raccords de sortie pour gaz de plongée Nitrox et oxygène
La présente Norme européenne s'applique aux raccords filetés utilisés pour le raccordement entre un robinet de bouteille à gaz et un réducteur de pression, sur les appareils de plongée à nitrox respirable ayant une teneur en oxygène supérieure à 22 % ou sur les appareils à oxygène. La présente Norme européenne spécifie les dimensions et les tolérances relatives aux raccords utilisés pour les appareils de protection respiratoire..
Oprema za varovanje dihal - Ventili za plinske jeklenke - 3. del: Izhodni priključki za potapljaška plina Nitrox in kisik
General Information
Relations
Overview
EN 144-3:2003 - Respiratory protective devices - Gas cylinder valves - Part 3: Outlet connections for diving gases Nitrox and oxygen (CEN) defines the threaded outlet connections used between a gas cylinder valve and a pressure reducer for diving respiratory equipment containing breathable Nitrox (O2 > 22%) or oxygen. The standard specifies the dimensions, tolerances and marking required to ensure safe, reliable and interoperable connections for diving cylinder valves at specified pressure ranges.
Key topics
- Scope: Connection between cylinder valve and pressure reducer for diving gases (Nitrox, oxygen).
- Pressure ranges: Two nominal pressure classes are addressed:
- Nominal 200 bar (for cylinders with maximum filling pressure up to 250 bar)
- Nominal 300 bar (for cylinders with maximum filling pressure between 250 and 350 bar)
- Dimensional specifications: Detailed drawings and dimensional tolerances (typically ±0.1 mm unless otherwise stated) for the threaded outlet, connector, handwheel and O‑ring interfaces.
- Marking requirements: Valve outlet connection must be permanently marked with "200" or "300" to identify the nominal pressure class.
- Normative references: Incorporates EN 144-1 (threads for insert connectors) and references applicable regulatory provisions.
- Regulatory context: Prepared by CEN and supports essential requirements of EU Directive 89/686/EEC for personal protective equipment (see informative Annex ZA).
- Transitional considerations: Recognises a phased implementation to accommodate existing national thread designs.
Applications
EN 144-3:2003 is practical and directly applicable where consistent, safe connections for breathing gas cylinders are critical:
- Ensures interchangeability of valves and pressure reducers across manufacturers and countries.
- Guides design and manufacture of gas cylinder valves, connectors and service parts for Nitrox and oxygen diving equipment.
- Informs quality control, inspection and testing procedures in production and overhaul facilities.
- Serves procurement specifications for dive centres, professional diving operations and safety regulators seeking compliance with European standards.
- Supports certification bodies and conformity assessment against PPE-related directives.
Who uses this standard
- Valve and cylinder manufacturers
- Diving equipment designers and OEMs
- Repair/maintenance workshops and service technicians
- Certification and conformity assessment bodies
- Dive centres, professional divers and procurement/specification teams
Related standards
- EN 144-1 (Respiratory protective devices - Gas cylinder valves - Part 1: Thread connections for insert connectors)
- Other parts of EN 144 series and CEN guidance on respiratory protective devices and gas cylinder fittings
EN 144-3:2003 provides a concise, engineering-focused specification to improve safety, compatibility and traceability of Nitrox and oxygen cylinder outlet connections used in diving respiratory equipment.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Atemschutzgeräte - Gasflaschenventile - Teil 3: Gewindeverbindungen am Ausgangsstutzen für die Tauchgase Nitrox und SauerstoffAppareils de protection respiratoire - Robinets de bouteille a gaz - Partie 3: Raccords de sortie pour gaz de plongée Nitrox et oxygeneRespiratory protective devices - Gas cylinder valves - Part 3: Outlet connections for diving gases Nitrox and oxygen13.340.30Varovalne dihalne napraveRespiratory protective devicesICS:Ta slovenski standard je istoveten z:EN 144-3:2003SIST EN 144-3:2003en01-september-2003SIST EN 144-3:2003SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 144-3February 2003ICS 13.340.30English versionRespiratory protective devices - Gas cylinder valves - Part 3:Outlet connections for diving gases Nitrox and oxygenAppareils de protection respiratoire - Robinets de bouteilleà gaz - Partie 3: Raccords de sortie pour gaz de plongéeNitrox et oxygèneAtemschutzgeräte - Gasflaschenventile - Teil 3:Gewindeverbindungen am Ausgangsstutzen für dieTauchgase Nitrox und SauerstoffThis European Standard was approved by CEN on 21 November 2002.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,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovak Republic, Spain, Sweden, Switzerland andUnited Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 144-3:2003 ESIST EN 144-3:2003
Clauses of this European Standard addressing essential requirements or otherprovisions of EU Directives.8SIST EN 144-3:2003
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Frequently Asked Questions
EN 144-3:2003 is a standard published by the European Committee for Standardization (CEN). Its full title is "Respiratory protective devices - Gas cylinder valves - Part 3: Outlet connections for diving gases Nitrox and oxygen". This standard covers: This European Standard is applicable to a thread connection used for the connection between a gas cylinder valve and a pressure reducer for respiratory equipment for diving containing breathable nitrox gas with an oxygen content greater than 22 % or oxygen. This European Standard specifies the dimensions and tolerances for connections which are used for respiratory equipment.
This European Standard is applicable to a thread connection used for the connection between a gas cylinder valve and a pressure reducer for respiratory equipment for diving containing breathable nitrox gas with an oxygen content greater than 22 % or oxygen. This European Standard specifies the dimensions and tolerances for connections which are used for respiratory equipment.
EN 144-3:2003 is classified under the following ICS (International Classification for Standards) categories: 13.340.30 - Respiratory protective devices. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 144-3:2003 has the following relationships with other standards: It is inter standard links to EN 144-3:2003/AC:2003. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 144-3:2003 is associated with the following European legislation: EU Directives/Regulations: 2016/425, 89/686/EEC, 93/68/EEC, 93/95/EEC, 96/58/EC; Standardization Mandates: M/031. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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Die EN 144-3:2003 stellt einen wichtigen Standard im Bereich der Atemschutzgeräte dar, der sich auf Gaszylinderventile bezieht. Der spezifische Fokus dieser Norm liegt auf den Ausgangsverbindungen für Tauchgase wie Nitrox und Sauerstoff. Die Relevanz dieser Norm ist besonders hoch, da sie sicherstellt, dass die verwendeten Gewindeverbindungen zwischen Gaszylinderventilen und Druckminderern den erforderlichen Spezifikationen entsprechen, um eine sichere Nutzung in medizinischen und Freizeit-Tauchbedingungen zu gewährleisten. Der Umfang der Norm umfasst die Definition von Abmessungen und Toleranzen für die Verbindungen, die in der Atemschutztechnik für Tauchgeräte eingesetzt werden. Dies ist besonders wichtig für Member von Tauchgemeinschaften, die zunehmend Nitrox mit einem Sauerstoffgehalt von mehr als 22 % verwenden. Die Einhaltung dieser Standards fördert nicht nur die Sicherheit der Taucher, sondern auch die Kompatibilität zwischen verschiedenen Herstellern und Produkten. Ein herausragendes Merkmal der EN 144-3:2003 ist die klare und präzise Spezifikation der technischen Details. Dies erleichtert die Entwicklung und den Austausch von Atemschutzgeräten, die für den Einsatz unter Wasser vorgesehen sind. Hersteller können darauf vertrauen, dass die Teile, die sie für ihre Produkte verwenden, sicher und funktional sind. Dies reduziert potenzielle Risiken und steigert das Vertrauen der Anwender in die Sicherheit von Atemschutzsystemen. Die Standardisierung durch die EN 144-3:2003 ist nicht nur ein regulatorisches Instrument, sondern auch ein essenzielles Werkzeug zur Verbesserung der Qualität und Sicherheit von Tauchgeräten. Durch die präzisen Vorgaben in Bezug auf die Ausgangsverbindungen wird eine konsistente und zuverlässige Nutzung der Atemschutzgeräte gefördert. Die Norm ist somit von zentraler Bedeutung für alle Akteure im Bereich Tauchindustrie und -forschung und trägt wesentlich zur Gewährleistung der Sicherheit unter Wasser bei.
La norme SIST EN 144-3:2003 représente un document essentiel pour le secteur de l'équipement de plongée, en se concentrant spécifiquement sur les connexions de sortie des vannes de bouteilles de gaz destinées aux dispositifs de protection respiratoire. Cette norme européenne est d'une grande pertinence car elle s'applique aux connexions filetées entre les vannes de bouteilles de gaz et les réducteurs de pression utilisés avec des gaz respirables, en mettant l'accent sur les mélanges de nitrox dont la teneur en oxygène est supérieure à 22 %, ou simplement l’oxygène. Les forces principales de cette norme résident dans ses spécifications détaillées des dimensions et des tolérances, garantissant ainsi une compatibilité et une sécurité maximales lors de l'utilisation de l'équipement de plongée. En établissant des standards clairs pour ces connexions, la norme contribue à la prévention des accidents potentiels liés à des incompatibilités entre les vannes et les réducteurs, ce qui est crucial dans des environnements où la sécurité est primordiale. De plus, la norme EN 144-3:2003 joue un rôle vital dans l'uniformisation des pratiques au sein de l'industrie, facilitant les échanges commerciaux et assurant que les produits respectent des critères de qualité robustes. Sa mise en œuvre favorise la confiance entre fabricants et utilisateurs d'équipements de plongée, promouvant ainsi des pratiques opérationnelles sécurisées et efficaces. En somme, la norme apporte une clarification indispensable sur les aspects techniques des connexions utilisées dans l'équipement respiratoire pour la plongée, soulignant son importance dans le cadre de la conformité réglementaire et de la sécurité du plongeur.
The SIST EN 144-3:2003 standard is a critical document that addresses the specifications for outlet connections utilized in gas cylinder valves specifically for respiratory protective devices intended for diving. This standard encompasses a defined scope that is essential for ensuring the compatibility and safety of connecting gas cylinders containing breathable nitrox and oxygen with pressure reducers in respiratory equipment. One of the standout strengths of the EN 144-3:2003 standard is its detailed specification of dimensions and tolerances for the thread connections, which is fundamental for maintaining safety in diving operations. By providing precise requirements, the standard mitigates the risks associated with improper connections that could potentially lead to dangerous situations during diving activities. The relevance of this standard cannot be overstated, particularly considering the increasing use of mixed gases in recreational and professional diving engagements. As more divers opt for nitrox mixes with oxygen content exceeding 22%, having a unified set of specifications ensures consistency and safety across various manufacturers and regulators in the diving industry. Furthermore, adherence to this standard supports compliance with broader safety regulations and promotes confidence among divers in the reliability of their equipment. In conclusion, the EN 144-3:2003 standard plays a pivotal role in the interplay between equipment safety and performance, making it an indispensable reference for manufacturers, equipment designers, and regulatory bodies within the diving community. It not only facilitates a higher level of safety but also supports the advancement of technology and materials in respiratory equipment used in diving.
EN 144-3:2003 표준은 다이빙용 호흡 보호 장치에서 사용되는 가스 실린더 밸브와 압력 감소기 간의 연결을 위한 스레드 연결에 적용됩니다. 이 표준은 호흡 가능한 니트록스 가스(산소 함량 22% 초과) 또는 산소로 구성된 다이빙 장비에 필요한 안전성과 신뢰성을 보장하는 데 필수적입니다. 이 표준의 강점은 구조적 치수와 허용 오차를 명확히 규정하여, 사용자가 다양한 압력 감소기와 가스 실린더 간의 호환성을 확보할 수 있도록 한다는 점입니다. 특히, 이러한 명세는 다이빙 환경에서의 안전성을 높이는 데 크게 기여하며, 다수의 제조업체와 사용자 간의 일관된 표준을 제공하는 역할을 합니다. 또한, EN 144-3:2003은 다이빙 관련 장비의 품질을 보장함으로써, 사고를 예방하고 모든 사용자가 안전하게 호흡할 수 있도록 돕는 중요한 기준을 제시합니다. 이 표준은 다이빙 산업에서의 널리 채택되는 기준으로서 지속적인 관련성을 유지하고 있으며, 다이빙 장비의 기술 발전과 함께 변화하는 요구를 수용할 수 있는 유연성을 가지고 있습니다. 전반적으로 EN 144-3:2003 표준은 다이빙용 호흡 보호 장치의 안전과 성능을 보장하는 데 있어 중요한 역할을 하며, 관련 산업의 지속적인 발전을 지원합니다.
EN 144-3:2003は、呼吸保護装置に関連する重要な欧州標準であり、特にダイビングにおけるガスシリンダーバルブと圧力調整器の接続に焦点を当てています。この標準の範囲は、22%以上の酸素含有量を持つ呼吸可能なナイトロックスガスまたは酸素を含むダイビング機器に適用されるスレッド接続に限定されています。これにより、ユーザーにとっての安全性が確保され、適切な機器間の相互運用性が促進されます。 この標準の強みは、接続部品の寸法と公差が明確に規定されている点です。これにより、異なるメーカーの製品間でも互換性が保たれ、事故を未然に防ぐことが可能になります。また、呼吸器具の安全性を向上させるため、厳格な基準に基づいて設計されているため、ダイバーは信頼性の高い装備を利用できるようになります。 加えて、EN 144-3:2003はダイビング業界におけるニーズに応じて、最新の技術的要件を反映しています。これにより、現代のダイビング環境において安全かつ効率的に使用されるための基盤を提供する重要なガイドラインとして位置付けられています。この標準は、ダイバーの安全性を高めるだけでなく、関連する機器の設計・製造においても重要な役割を果たしています。
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