1. The self-priming filter-type gas mask consists of a mask, an air duct, a filter element, and a backpack. The mask is made of natural rubber injection and is divided into 2#, 3#, 4#, and 5# helmet-type full-face masks according to the size of the head. The binocular structure has the characteristics of comfortable wearing, reliable protection, smooth breathing, and low resistance. It can be connected to the 3rd and 2nd level filters filled with different agents through the air duct.

2. This product is suitable for toxic and harmful environments such as factories, miners, warehouses, ports, military scientific research, anti-terrorism, fire fighting, and health and epidemic prevention.

3. Anti-virus time: The anti-virus time of the TF1A filter-type gas mask is determined by the performance of the filter element of the selected model.

4. Exhalation resistance ≤ 100Pa (30L/min)

5. Inhalation resistance ≤ 40Pa (30L/min)

6. Total visual field ≥ 65%, binocular visual field ≥ 24%, lower visual field ≥ 35°

7. Mask leakage rate ≤ 0.05%

8. Exhalation valve air tightness: When the exhalation valve is decompressed to -1180Pa, the negative pressure value of the exhalation valve should not drop by more than 500Pa within 45s.