What are the reasons for firefighters to use this type of filter?
Emergency services around the world, including professional and industrial fire services (e.g. chemical plants), generally use positive pressure breathing apparatus.
Positive pressure technology is derived from isolated respiratory protection and ensures an optimal supply of breathing air with maximum safety from respiratory toxins and contaminants. This technology creates a positive pressure inside the respirator, preventing harmful particles from entering the mask.
Positive pressure respiratory protective device have specialised connections, such as the M 45x3 connection thread, while negative pressure respiratory protective device use the Rd 40 round thread.
Respirator filters are an essential part of the protective equipment used by fire fighters in the aftermath of a fire and vary according to the type of contaminant. A particle filter, for example, may be used to protect against solids such as dust and smoke, or a gas filter may be used to trap toxic gases and vapours.
Standard respiratory filters are fitted with a Rd 40 negative pressure thread. This means that when firefighters need to use respiratory filters for their operations, depending on the hazard situation, they are faced with the problem of changing equipment or respirators to switch from positive pressure to negative pressure.
- Eliminates the need to change respirators during a post-fire operation to locate and extinguish hot spots to prevent the fire from reigniting.
- Eliminates duplicate equipment for firefighters - Emergency masks can continue to be used.
- One type of mask for all applications - reduced procurement costs and less cleaning and maintenance.
No, these filters are currently only intended for use by German fire services.
The spring-loaded exhalation valve in positive pressure full face masks increases exhalation resistance and therefore this combination is more stressful for the wearer than filtering devices with negative pressure full face masks.
Click here for the respiratory filters with positive pressure connection by BartelsRieger
Richard-Byrd-Straße 23, 50829 Köln
Phone +49 (0)221 59777- 0
mail@bartels-rieger.de
