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Breathing valves are an integral equipment of vertical tanks, which provides explosion-proof operation of the RVS. During the storage of petroleum products or conducting dumping operations, evaporation and the formation of vapors in the gas space occur. The pressure can also vary within one day due to a change in the ambient temperature. Some operational processes are accompanied by the ingress of ambient air from the outside. All these processes ("breathing") lead to an increase in pressure in the gas space, which can destroy the wall, squeeze out the roof or lead to an explosion. In order to avoid this, breathing and safety valves are installed.


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