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Breathing valve is a kind of safety valve, it is fixed on the top of the tank ventilation device to ensure the normal pressure tank internal state, to prevent overpressure or super vacuum tank, the tank suffered damage, it can also reduce the liquid Volatile loss, this valve is usually used with flame arrester. According to the State (Code for Fire Protection Design of Petrochemical Industry) (GB50160-92), "A and B liquid fixed roof tanks shall be equipped with flame arresters and breathing valves." Fire Resistant All-weather valve is a petrochemical tank necessary new safety equipment, its biggest advantage is resistance to fire breathing performance, light weight, easy maintenance. It is suitable for flash point below 28 ℃ Class A oil and the flash point is lower than 60 ℃ of B oil. Such as gasoline, kerosene, diesel, crude oil, benzene, toluene, ethanol and other media storage tank, it -35 ℃ - +60 ℃ temperature environment work properly. Weatherproof fire breathing valve is used to install the main safety equipment on fixed roof storage tanks such as crude oil, gasoline, kerosene, light diesel oil and aromatic hydrocarbon. It is from the evaporation loss and protection of storage tanks in the event of overpressure or vacuum from the role of destruction, but also has a large ventilation, sealing performance, leakage, corrosion resistance and other characteristics. More Search Keywords: Breathing Valve