Air breathing apparatus is a personal protective equipment that is necessary for protecting firefighters' own safety and preventing toxic gases. According to the use of pressure inside the mask, it is divided into positive pressure air respirator and negative pressure air respirator. An air respirator whose internal pressure is slightly lower than the outside pressure is called a negative pressure air respirator. Since this type of respirator is in a state of negative pressure when the mask is inhaled, if the mask is poor in airtightness, the external harmful gas (gas mask can be prevented) may enter the mask and affect the respiratory safety. An air respirator with a pressure slightly higher than the outside pressure in the mask is called a positive pressure air respirator. It has the advantages of reliable performance, comfortable wear, comfortable breathing, strong body adaptability, wide coverage of full-face view, good airtightness, small size, simple operation and convenient maintenance, etc. Applications of air respirator: closed confined space and hypoxia , toxic and hazardous gas environment; its components: stainless steel carts, carbon fiber cylinders, gas supply pipe, pressure reducer, gas supply valve and full face mask and other components, 4 or 2 carbon fiber cylinders.
The role of air respirators:
1. Can be used by two people at the same time to ensure long-term operation 2. The gas source can be replaced in time without affecting the work and saves time 3. The standard configuration of the medium pressure catheter: The length of the main catheter is 40 meters, and the lengths of the two branch catheters are 10 m 4. The total length of the medium pressure conduit can be extended to 90 meters according to demand, and the air supply is still comfortable and smooth. (commonly known as chemical protective clothing)
5. Flexible connection between high pressure hoses to avoid accidents and effectively prevent damage caused by inadvertent collision or friction. 6. High pressure output pressure reducing valve ensures adequate respiratory flow.
7. Stainless steel cart to enhance corrosion resistance.
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