A check valve and a globe valve should be installed before the vapor line branch connects to the main pipe at the loading/unloading station
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Experts who inspected the enterprise noted that there were no check valves or stop valves on the vapor line branch pipes leading to the main collection pipe at the loading/unloading platform. Question: Our company’s oil and gas recovery system at the loading/unloading docks is equipped with stop valves and flame arrestors on both the main pipelines and branch pipelines. Is it necessary to install check valves and stop valves as well?
According to expert advice, a check valve and a stop valve need to be installed on the vapor line branch pipe of the loading/unloading platform oil and gas recovery system before it connects to the main pipe. Although there are stop valves and flame arrestors already installed in front of the oil and gas recovery devices on your loading/unloading platforms, as well as on the main and branch pipelines, it is still necessary to add check valves and stop valves to ensure that no backflow occurs or any accidents happen when the gas enters the collection pipe. This effectively prevents gas backflow and ensures the safe operation of the system. .