PROTECTIVE MASK M3, PERSONAL

Protective mask M3, personal, complete with NBC filter is intended specifically for efficient protection of the eyes, face and respiratory system against NBC contaminants in the form of gases, vapors, drops, solid and liquid aerosols and dust particles; It could also be used for protection against other toxic gases, vapors and particles jointly with proper filter. Depending upon the type and concentration of contaminants and working conditions filter should be screwed on the M3 face piece standard filter connector; Also, M3 protective mask can be used independently or combined with other personal protection means, depending on the activities that are performed by user in contaminated area; the M3 has speaking (phonic) unit. Speaking unit provides quality speech transmission during the wearing of the M3 protective mask.

either directly either by using a microphone; besides speaking unit M3 has water drinking device; the M3 protective mask is consisting of face piece, NBC filter, carrier bag and cleaning clothes; available in three sizes (small, medium, large). Colors available according to customers’ requirements; position of the mask on the face easily adjusted by elastic straps of the head harness; Exhalation valves provides secure protection; The M3 protective mask is made of butyl rubber so it could be used under each weather condition at the temperature ranging from -300C to + 500C. It is neither dangerous to health not irritant to skin, stable color, resistant to chemicals. The weight of the complete mask M3 is max. 1100 g. The mask can operate in temperature ranges of 30 to +50 C. The resistance of the exhale valve subassembly is max 70 Pa, at the flow of 0.5m/s. Static permeability of the exhale valve is less than 15 cm3 for exposure of 30s at the sub pressure of 250 Pa. The Exhalation resistance through exhalation valve subassembly: max 80 Pa during the flow of 30 l/min. Dynamic exhalation valve leakage is max 1×10-3 %; The aerodynamic resistance of the NBC filter must not exceed 160 Pa during the air flow of 30 l/min; Total resistance of the M3 protective mask is max 200Pa during the flow of 30 /min; The mask is sealed at the overpressure of 3000 Pa for 60 s. Transparency of glasses is more than 85%.

Glasses provide wide-angle visibility, field of vision not less than 80%. The mask material and the water drinking hose is protective against yperite drops 24 hours. The mask in contact with the napalm will not burn through for min 15s. The exposed parts of the mask are resistant to thermal impulses of nuclear explosion 30 Kt. The mask provides for direct voice transmission by use of telephone and microphone. The total mask resistance is max 170 Pa at the flow of 0.5 dm3/s. The filter can be fitted to the left and right side of the mask. Standard oculars can be replaced with correction/diopter glasses. Water drinking system provides for simple use of water canteen. Speech distinction index is greater than 0.85. Speech reduction factor is less than 3.