Problems with the flame arrester in flame-retardant breathing valves
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Help with inquiries regarding the following questions: 1. For breathing valves equipped with a flame arrestor, should such flame arrestors be divided into flame-retardant types and explosion-proof types?； 2. For the breather valve on the storage tank, which is directly connected to the atmosphere and does not have an external exhaust pipe – a 24/7 flame-arresting breather valve – should its flame arrester be of the flame-retardant type or the explosion-proof type?
Could any fellow travelers who know the answer help reply?