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1. High strength steel plate laser cutting, high precision, reliable and flexible operation
2. Supported by nitrogen spring of rotating shaft, it is labor-saving and light to open and close doors
3. The double-layer high-strength steel armour is provided with an air flow guide hole in the inner steel armour to guide the high-speed air flow when the cylinder is broken, effectively preventing the cylinder fragments from injuring people
4. Inlet closing inflation valve: when the door of explosion-proof inflation box is opened, even if the inflation valve is opened, the gas cylinder will not be inflated. Only when the door is closed can the gas cylinder be inflated to prevent misoperation
5. No matter how high the air source pressure is, the inlet pressure reducing valve can be adjusted to the required working pressure according to the working pressure of the gas cylinder to prevent overpressure of the gas cylinder