Help me figure out what these two symbols in the drawing mean
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This is a vacuum pipeline. What does that ‘ Day’- shaped symbol on it represent? And what is that chimney-like structure connected by dashed lines next to it?
It’s too localized, and not very clear either
Safety valve, top vent separator
【The ‘ Day’- shaped symbol above represents】 a safety valve. 【Something like a chimney】Oil mist separator