Emergency shut-off device (pull-valve) for loading hose
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Is the substance inside the red circle called a break valve?
The flexible hose type emergency disconnect valve (ERC-HX) is a device installed at the end of the flexible hose, used to automatically and quickly disconnect the tank truck from the hose in emergency situations. Equipping the flexible hose with an emergency disconnect valve helps to protect the hose itself, ensures the safety of people and property during fluid loading and unloading, reduces the impact of accidents, and prevents environmental pollution. It is suitable for the loading and unloading of various chemical media such as oils, liquefied gas, natural gas, and liquid ammonia.
In essence, a breakaway valve consists of two check valves, with a shaft pushing them together. If a tank truck is misused with a quick-connect fitting, this mechanism will disconnect, preventing leaks or damage to the flexible hose, thus serving as a safety feature. It might not need to be used for ten years, but when it is used once, it proves to be extremely useful! This thing isn’t very expensive!
Breakaway valve. . . There is a weak point; when it is pulled apart, the valve flaps on both sides move to effect the cut-off. . .