EN 148-3:1999
(Main)Respiratory protective devices - Threads for facepieces - Part 3: Tread connection M 45 x 3
Respiratory protective devices - Threads for facepieces - Part 3: Tread connection M 45 x 3
This European Standard is applicable to self-contained compressed air breathing apparatus designed as positive pressure breathing apparatus. This European Standard specifies a thread connection, M 45 x 3, which may optionally be used for facepieces for positive pressure breathing apparatus. This European Standard does not apply to negative pressure breathing apparatus, to closed-circuit breathing apparatus or to diving equipment.
Atemschutzgeräte - Gewinde für Atemanschlüsse - Teil 3: Gewindeanschluß M 45 x 3
Diese Europäische Norm gilt für Behältergeräte mit Druckluft (Preßluftatmer) in Überdruckausführung. Diese Europäische Norm legt eine Schraubverbindung M 45 x 3 fest, die nach Wahl für Atemanschlüsse für Überdruckpreßluftatmer verwendet werden kann.
Appareils de protection respiratoire - Filetages pour pièces faciales - Partie 3: Raccord à filetage M 45 x 3
La présente norme européenne est applicable aux appareils de protection respiratoire autonomes à air comprimé conçus comme appareils de protections respiratoire isolants à pression positive. La présente norme européenne spécifie un raccord à filetage M 45 x 3 qui peut être utilisé facultativement pour les pièces faciales pour appareils de protection respiratoire isolants à pression positive.
Oprema za varovanje dihal – Navoji na maskah – 3. del: Povezava z navojem M 45 X 3
General Information
- Status
- Published
- Publication Date
- 16-Feb-1999
- Withdrawal Date
- 30-Aug-1999
- Technical Committee
- CEN/TC 79 - Respiratory protective devices
- Drafting Committee
- CEN/TC 79/WG 4 - Filters and absorption devices
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 03-Dec-2022
- Completion Date
- 14-Apr-2025
Relations
- Replaces
EN 148-3:1992 - Respiratory protective devices - Threads for facepieces - Thread connection M 45 x 3 - Effective Date
- 22-Dec-2008
- Effective Date
- 22-Dec-2008
Overview
EN 148-3:1999 is a European Standard developed by the European Committee for Standardization (CEN) that specifies the thread connection M 45 x 3 for facepieces used in self-contained compressed air breathing apparatus. This standard applies exclusively to positive pressure respiratory protective devices, ensuring compatibility and safety in thread connections between facepieces and breathing apparatus components. It does not cover negative pressure devices, closed-circuit breathing apparatus, or diving equipment.
This standardized thread connection facilitates secure and reliable attachment of facepieces, enhancing the effectiveness and safety of respiratory protective devices used in various hazardous environments.
Key Topics
M 45 x 3 Thread Connection
Specifies the dimensions and technical characteristics of the M 45 x 3 thread used for attaching facepieces to positive pressure breathing apparatus.Applicability
Applies exclusively to self-contained compressed air breathing apparatus operating with positive pressure, ensuring correct standardization in emergency and industrial respiratory protection.Exclusions
This standard is not relevant to:- Negative pressure breathing apparatus
- Closed-circuit breathing sets
- Diving equipment
Safety and Interoperability
By defining the thread parameters, EN 148-3:1999 enhances the interchangeability of components and maintains the integrity of respiratory protective systems.
Applications
EN 148-3:1999 plays a crucial role in the manufacturing, testing, and certification of respiratory protective devices that require a secure M 45 x 3 thread connection for facepieces. Key practical applications include:
Firefighting Equipment
Standardized facepiece connections for positive pressure self-contained breathing apparatus used by firefighters.Industrial Respiratory Protection
Ensures compatibility in settings where workers rely on compressed air breathing apparatus to protect against hazardous atmospheres.Emergency Response Gear
Supports consistency in rescue and emergency breathing apparatus components, contributing to operational safety.Equipment Manufacturing
Provides clear industry guidelines for manufacturers designing facepieces and breathing apparatus components with the M 45 x 3 thread.
Related Standards
Several related standards complement EN 148-3:1999 to provide comprehensive guidance on respiratory protective devices, such as:
- EN 148-1 - General specifications for respiratory protective devices and facepieces
- EN 148-2 - Thread dimensions for various respiratory protective connectors
- EN 137 - Specifications for self-contained open-circuit compressed air breathing apparatus
- EN 139 - Standards for filter devices for respiratory protective equipment
These standards collectively ensure a harmonized approach to safety, quality, and interoperability in respiratory protective devices across Europe and internationally.
By adhering to EN 148-3:1999, manufacturers and users ensure reliable, safe, and standardized thread connections for positive pressure respiratory protective facepieces, supporting the health and safety of personnel in hazardous environments.
Frequently Asked Questions
EN 148-3:1999 is a standard published by the European Committee for Standardization (CEN). Its full title is "Respiratory protective devices - Threads for facepieces - Part 3: Tread connection M 45 x 3". This standard covers: This European Standard is applicable to self-contained compressed air breathing apparatus designed as positive pressure breathing apparatus. This European Standard specifies a thread connection, M 45 x 3, which may optionally be used for facepieces for positive pressure breathing apparatus. This European Standard does not apply to negative pressure breathing apparatus, to closed-circuit breathing apparatus or to diving equipment.
This European Standard is applicable to self-contained compressed air breathing apparatus designed as positive pressure breathing apparatus. This European Standard specifies a thread connection, M 45 x 3, which may optionally be used for facepieces for positive pressure breathing apparatus. This European Standard does not apply to negative pressure breathing apparatus, to closed-circuit breathing apparatus or to diving equipment.
EN 148-3:1999 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 148-3:1999 has the following relationships with other standards: It is inter standard links to EN 148-3:1992, EN 148-3:1992/AC:1996. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 148-3:1999 is associated with the following European legislation: EU Directives/Regulations: 2016/425, 89/686/EEC; Standardization Mandates: M/BC/CEN/88/7. 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.
EN 148-3:1999 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-julij-1999
Oprema za varovanje dihal – Navoji na maskah – 3. del: Povezava z navojem M 45
X 3
Respiratory protective devices - Threads for facepieces - Part 3: Tread connection M 45
x 3
Atemschutzgeräte - Gewinde für Atemanschlüsse - Teil 3: Gewindeanschluß M 45 x 3
Appareils de protection respiratoire - Filetages pour pi
...
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