Introduction The product is used in the fire and rescue personal protective equipment, with small size, light weight, simple operation, safe and reliable. Can be widely used for petrochemical, power, mining and other industries, for fire and ambulance personnel in hypoxia or harmful gases in the environment safe and effective emergency rescue and disaster relief and rescue work. Features and uses: RHZKF6.8/30 positive pressure fire air respirator (hereinafter referred to as the respirator) is used in case of emergency, fire, chemical, guest houses, hotels, and other industries to meet the personal protective equipment. It is widely used in fire, chemical, shipbuilding, petroleum, electricity, gas refining, warehouses, petroleum warehousing, laboratories, mining and other industries, for a firefighter or emergency rescue personnel in smoke, gas, hypoxia environment, as well as toxic and harmful substances in the environment, safe and effective for fire fighting, rescue, disaster relief and rescue work. How it works: 1, the mask respirator equipped with vision, bright, no fog, air tightness, fast connection with the supply valve disassembly. Using the mask pressure is always higher than the surrounding atmospheric pressure, toxic gases from the surrounding environment, the oxygen concentration limit. 2, the respirator 6.8 liters of carbon fiber composite cylinders, light weight, large gas storage. Use of the process, users can reduce labor intensity, improve the efficiency of the staff wear. 3, the radial dimension and the axial dimension of the supply valve of the respirator are small, the mask under a broadening of horizons, the user's eyes and a plan view angle can be extended. 4, the respirator has a residual pressure alarm whistle, when the tank pressure drops to (5.5 ± 0.5) MPa, audible alarm to the wearer, the residual pressure alarm whistle alarm, residual gas may also be used for 5-8 minutes, easy for the user to leave the scene. Alarm whistle on the user's chest, in noisy several staff members to work together on-site, the same can clearly hear the alarm whistle, tell who the alarm whistle alarm, and will not misunderstanding, easy to wear personnel evacuated in a timely manner. However, the wearer in the use of the process should be observed at any time indicates that the value of the pressure gauge. 5, the respirator has a small size, light weight, easy to operate, safe, reliable, easy maintenance, is engaged in fire fighting, rescue and relief work, personal life-saving protection ideal product. The main technical indicators: No. Technical Specifications Model RHZKF9.0/30 (H2001-9.0) RHZKF6.8/30 (H2001-6.8) RHZKF4.7/30 (H2001-4.7) RHZKF8 × 2/30 (H2001-6.8 × 2 ) an overall weight ≤ 12kg ≤ 10kg ≤ 8.5kg ≤ 17kg Dimensions (L × W × H) mm 650 × 270 × 225 600 × 270 × 210 600 × 270 × 200 600 × 350 × 210 applicable ambient temperature -30 ° C -60 ° C 4-cylinder rated working pressure of 30MPa cylinder volume (water volume) 9.0L 6.8L 4.7L 6.8L 6 cylinder reservoir gas 2700L 2040L 1410L 4080L 7 8 maximum absorption of positive pressure gas Features gas resistance ≤ 500Pa 9 peak expiratory resistance ≤ 1000Pa 10 residual gas the alarm pressure of 5 to 6Mpa 11 alarm sound level ≥ 90dB 12 inhalation of carbon dioxide gas content of ≤ 1%