GB6220-2023

Respiratory protection—Air line respirator

呼吸防护长管呼吸器

GB 6220-2023 es una norma nacional china obligatoria vigente: Respiratory protection—Air line respirator. Sector: Sanitario. Enfoque: Seguridad de productos. Entrada en vigor: 1 ene 2025.

La aplicabilidad depende del alcance del producto, la vía de certificación, los avisos de la autoridad competente y las reglas de transición. Solicite una traducción o verifique la fuente antes de usar esta ficha en una decisión de cumplimiento.

Resumen de cumplimiento

Este resumen está disponible por ahora solo en inglés.

Alcance y aplicabilidad

This standard applies to air line respirators used in industrial workplaces where respiratory protection is required. It covers three main types of respirators: self-inhalation, continuous flow, and demand valve types. This standard is not applicable to firefighting environments. Manufacturers producing respiratory protective equipment for industrial occupational health and safety must comply with these requirements.

Requisitos técnicos

The standard specifies comprehensive physical, mechanical, and performance requirements for air line respirators and their components. It mandates strict criteria for materials, ensuring that parts in contact with skin do not cause irritation and that materials used in potentially explosive environments are safely coated. The structural design must prevent any sharp edges, ensure secure fitting, and include automatic warning devices for power or air supply failures. Manufacturers must ensure that structural integrity is maintained under all foreseeable operating conditions. For respiratory performance, the standard defines limits for Total Inward Leakage (TIL) and the maximum allowable carbon dioxide content in inhaled gas. It sets specific breathing resistance parameters based on the respirator type and facepiece category. Additionally, it outlines the minimum designed flow rate (MMDF) that manufacturers must guarantee to ensure adequate air supply, which varies depending on whether a tight-fitting facepiece or a loose-fitting hood is used. The standard also details requirements for critical components such as breathing hoses and air supply tubes. These components must demonstrate adequate resistance to kinking, crushing, and pressure, while maintaining flexibility and airtightness. Connection strength between hoses, valves, and belts is strictly regulated to prevent accidental disconnection during use. Supply tubes must not exceed 80 meters in total length without additional safety testing. Furthermore, the standard addresses specialized configurations like mobile compressed air supply systems and switch-over devices. It sets performance criteria for pressure reducers, pressure gauges, high-pressure cylinders, and low-pressure warning devices. If a respirator claims additional protective functions, such as welding or head protection, it must simultaneously meet the relevant Chinese standards referenced within the text, such as GB 2811 and GB/T 3609.

Métodos de ensayo

The standard outlines a series of rigorous evaluation procedures, including Total Inward Leakage (TIL) testing using human subjects performing simulated movements, and breathing resistance measurements using a breathing machine. It also details tests for hose and tube crush resistance, kink resistance, and connection strength under specific axial tensile forces. Environmental preconditioning tests at extreme high and low temperatures are required, alongside specific evaluations for component flammability, noise levels at the ear, and overall practical performance as per GB/T 23465.

Preguntas frecuentes

What products are regulated under GB 6220-2023?

The standard regulates air line respirators used in industrial workplaces. It explicitly excludes respiratory protective equipment designed for firefighting operations.

Are there any significant updates in GB 6220-2023 compared to the 2009 version?

The 2023 version introduces several major updates, including new technical requirements for open-type facepieces, supply hoods, component flammability, and practical performance. It also updates the testing methods for total inward leakage and breathing resistance.

How does GB 6220-2023 differ from international standards like ISO or EN?

GB 6220-2023 incorporates concepts and testing methodologies referenced from international standards such as ISO 16972 and EN 14594, but it establishes specific compliance criteria and mandatory limits tailored to the Chinese market.

The summary above provides a high-level overview of GB 6220-2023. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 6220-2023 today to access all detailed parameters, tables, and testing procedures.

Indicaciones de aplicabilidad

Tipo: Producto
CCS: C 73
ICS: 13.340.30
Organismo competente: Ministry of Emergency Management
Comité técnico: National Technical Committee on Personal Protective Equipment of Standardization Administration of China

Relaciones

Sustituye a:GB 6220-2009