MHG-204 gas mask (with communication system)

A gas mask consists of a mask body and a tank, which has excellent dynamic airtightness, low respiratory resistance, balanced weight distribution, and good physiological comfort.
Application areas:
Mainly suitable for low-risk radioactive dust, chemical accident sites, and biological aerosol contaminated environments to protect the safety of the face and respiratory organs.
Product Features:
Matching: Used in conjunction with helmets, goggles, non airtight protective clothing, and communication equipment, it has good compatibility.
·Communication: Its voice communication has small transmission loss and clear communication effect, and the equipped electroacoustic speaker can match the electroacoustic communication interface reserved for the mask.
·Drinking water function.
·Anti fog performance: The eyepiece will not fog or affect observation under ambient temperatures of -25 to 35 ° C.
·Safety: All components are made of non-toxic and harmless materials, and materials that come into contact with the skin will not cause irritation.
·Environmental adaptability: The tank can still maintain integrity, and after testing for high temperature, low temperature, dust, rainwater, etc., the filtration efficiency is not less than 99.97%.
The mask adopts a large eyepiece structure. The lens is made of flexible materials with a wide field of view, foldability, and portability.
·The eyeglass frame that can be installed in the face mask, by installing corresponding lenses that match the wearer’s degree, enables myopic individuals to conveniently wear gas masks.
·The mask design imitates the curvature of the human face, making it comfortable to wear.
The curved tank can fit well with the face mask. Main performance and technical parameters
a) Protection time
The protection time against mustard gas shall not be less than 360 minutes;
The protection time for cyanide chloride shall not be less than 30 minutes;
The protection time for cyclohexane, ammonia, cyanide chloride, formaldehyde, hydrogen cyanide, hydrogen sulfide, nitrogen dioxide, phosgene, phosphine, and sulfur dioxide shall not be less than 30 minutes.
The filtration efficiency for toxic and harmful aerosols and nuclear radioactive dust shall not be less than 99.975%.
b) Inspiratory resistance
Under a constant airflow of 30L/min, not exceeding 160Pa;
Under a constant airflow of 85L/min, the pressure should not exceed 430Pa.
c) Expiratory resistance
Under a constant airflow of 85L/min, the pressure should not exceed 150Pa.
d) Vision
The total field of view shall not be less than 80%;
The binocular field of view shall not be less than 55%;
The lower field of view should not be less than 35 degrees.
e) Overall protective performance
The protection factor shall not be less than 1 × 104.
f) Exhalation valve of face mask
When the pressure of the exhalation valve is reduced to -1180Pa, the pressure value should not decrease by more than 350Pa within 1 minute.
g) Dead cavity
Not exceeding 1%.
h) Strong combination of face mask and filter element
Not less than 250N.
i) Headband strength
Not less than 150N.
j) Baoming Performance
Under environmental conditions of -25~35 ℃, the lens does not fog or fog does not affect the observation ability of personnel when worn.
k) Call performance
It has voice communication function and an electronic speaker interface.
l) Compatibility
Can be used in conjunction with emergency rescue helmets and non airtight protective clothing.
m) Security
Each component material is non-toxic and harmless; Materials in contact with the skin have no irritating effect on the skin.
n) Number setting: Single number.
o) Color: Black.
p) Storage life: not less than 10 years.