Narvalo Active Shield is the innovative air extraction valve for FFP3 masks developed by Narvalo, a start-up and spin-off from Politecnico di Milano, with BLS and POLIHUB. This intelligent valve ensures optimal breathing comfort, thanks to an adaptive fan that reduces humidity and extracts CO2 ensuring maximum freshness during use.
This valve is equipped with a rechargeable lithium battery (800 mAh) that gives the device more than 8 hours of autonomy. The recharging socket is a micro USB located on one side of the product.
The adaptive ventilation system extracts the CO2 produced during breathing and reduces the moisture accumulated inside the mask. The ventilation is adjusted automatically and adapts to the user's breathing.
It is an external protective layer that ensures the protection of the filtering material from dirt, dust and liquids as well as the normal mechanical stress due to prolonged use thus extending and preserving filtering efficiency and making the device safer.
Made with a new soft technical foam, which allows an excellent fit on any face and guarantees a high comfort on contact with the skin.
The nose clip, placed internally between the layers of filtering material, adapts optimally to the profile of the nose and eyes, ensuring good visibility and maximum compatibility with glasses.
The elastics, thanks to the innovative drop-off system, facilitate the correct positioning of the facepiece on the user’s face.
An activated carbon layer may be added to the respirator to protect from nuisance odours caused by gases and vapours, both organic and acidic, including ozone (ideal for welding operations), in concentrations below the threshold limit value (TLV).
The ratio of transmission of water vapour through the material is 3500 g/m² 24hrs. A value that defines materials of a high transpiration range which makes it ideal for hard physical work or high temperatures. Tests performed according to ASTM E96/E96M.
Individual hygienic packaging protects the dust mask from contamination before use, ensuring convenient storage and distribution in the work environment.
Anatomic mask
The pre-formed cup and elastic support make an easier and reliable fit, perfectly adapting to different physiognomies and ensuring an excellent hold. It offers an excellent visual field and a great compatibility with glasses.
Intelligent exhalation valve
Narvalo Active Shield is the innovative air extraction valve for FFP3 masks developed by Narvalo, a start-up and spin-off from Politecnico di Milano, with BLS and POLIHUB. This intelligent valve ensures optimal breathing comfort, thanks to an adaptive fan that reduces humidity and extracts CO2 ensuring maximum freshness during use.
Lithium battery
This valve is equipped with a rechargeable lithium battery (800 mAh) that gives the device more than 8 hours of autonomy. The recharging socket is a micro USB located on one side of the product.
Adaptive ventilation
The adaptive ventilation system extracts the CO2 produced during breathing and reduces the moisture accumulated inside the mask. The ventilation is adjusted automatically and adapts to the user's breathing.
Armor® layer
It is an external protective layer that ensures the protection of the filtering material from dirt, dust and liquids as well as the normal mechanical stress due to prolonged use thus extending and preserving filtering efficiency and making the device safer.
Gasket
Made with a new soft technical foam, which allows an excellent fit on any face and guarantees a high comfort on contact with the skin.
INTERNAL NOSE CLIP
The nose clip, placed internally between the layers of filtering material, adapts optimally to the profile of the nose and eyes, ensuring good visibility and maximum compatibility with glasses.
Adjustable elastics
The elastics, thanks to the innovative drop-off system, facilitate the correct positioning of the facepiece on the user’s face.
Available with activated carbon
An activated carbon layer may be added to the respirator to protect from nuisance odours caused by gases and vapours, both organic and acidic, including ozone (ideal for welding operations), in concentrations below the threshold limit value (TLV).
High breathability
The ratio of transmission of water vapour through the material is 4500 g/m² * 24hrs. A value that defines materials of a high transpiration range which makes it ideal for hard physical work.
Single pack
Individual hygienic packaging protects the dust mask from contamination before use, ensuring convenient storage and distribution in the work environment.
Code | Model | Protection class | Exhalation valve | Carbon layer | Gasket | Elastics | Size |
8101019 | BLS Zer0 32 Active | FFP3 R D | complete | adjustable | |||
8101020 | BLS Zer0 32 C Active | FFP3 R D |
![]() | complete | adjustable |
The FFP3 protection of BLS Zer0 32 Active filtering facepieces meets the innovative Narvalo Active Shield electronic valve.
The Active Shield ensures constant optimisation of the airflow inside the mask, reducing the accumulation of carbon dioxide, moisture and heat.
The electronic vent significantly reduces the temperature inside the facepiece, as shown by the thermal camera analysis.
An algorithm allows the pressure sensor to activate the fan when the user is breathing and deactivate it when the PPE is not in use.
The fan speed automatically adjusts according to breathing frequency, maximising battery life.
The Active Shield exhalation valve significantly reduces fatigue, helping the user to focus better on their activities.
BLS Active System app allows the safety manager to create detailed reports to check PPE usage data, highlighting errors and anomalies.
Workers in the construction sector are exposed to dust from materials such as cement, sand, quartz dust, stone or wood. The use of an FFP3 filtering facepiece helps to protect workers in this sector from the harmful effects of airborne dust, including nanoparticles, and the Active Shield exhalation valve helps to maintain a more comfortable environment inside the mask during working hours.
In the automotive industry, harmful dust and fumes may be present during sanding, grinding or welding activities. The use of BLS Zer0 32 Active mask with FFP3 protection, with proven filtering efficiency even against nanoparticles, in combination with the Active Shield, helps to protect workers from these pollutants, improving air flow and reducing the feeling of heat and humidity inside the device.
In agricultural workplaces, when tilling soil, handling animals or handling fertilisers, you are subject to exposure to allergens and toxic dust. BLS FFP3 mask with the Active Shield valve can provide effective protection from these particles, while ensuring adequate ventilation.
In food production environments, such as bakeries, butchers or food processors, BLS Zer0 32 Active mask with Active Shield can protect users from airborne dust additives, pigments and allergens, in maximum comfort.
In the professional cleaning sector, where people work in different places, such as offices, hotels, commercial or industrial facilities, BLS FFP3 mask with Active Shield can be used to protect operators from dust and airborne particles during activities, without the feeling of heat on the face.
In foundries, the risk of exposure to metal dust and fumes often requires FFP3 type protection: BLS Zer0 32 Active filtering facepiece provides excellent protection, as it also ensures filtration from nanoparticles and, thanks to the combination with the Active Shield valve, ensures respiratory comfort that is immediately perceived by the operator.
Exposure to medicines and active ingredients requires FFP3 protection, which is perfectly guaranteed by BLS Zer0 32 Active filtering facepiece. The combination with the Active Shield electronic valve decreases respiratory fatigue in operators, increasing their well-being: the benefit will also be perceived by older staff, more prone to respiratory fatigue.