self-rescuer is safety equipment and used in the coal mining or under the circumstance of toxic gas, soot and oxygen-deficiency. ZY45 self-rescuer is one kind of closed-circuit respirators with air circulating system. It is used in the coal mining or under the circumstance of toxic gas, soot and oxygen-deficiency. It helps workers to breath and escape from the dangerous area. Features:Comply with the requirements of MT711-1997. Small size, light and good impermeability Advanced techniques, perfect testing equipments. Three oxygen supply methodfixed, auto and manual. It improves the product in terms of security and reliability. A circulating respiratory system: less respiratory resistance, no dust,comfortable air temperature Advanced decompression technique,stable and reliable

self rescuer