Benzene extraction
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Cross-line function in the outlet pipeline of the benzene extraction shield pump
For purging, I guess. . Step over the shielded pump. . .
It is a bypass line added in front of and behind the outlet check valve. Is it anti-freezing?
A shielded pump cannot be pumped to vacuum, as doing so will damage the pump body; therefore, a return line is provided.
Across the check valve, there should be something to prevent freezing in winter – what is the medium inside?
What type of shielded pump? ? What is a medium? ?
It depends on where the bypass line leads to. Generally, there is a bypass line between the outlet and the inlet, which allows flow to be adjusted so that the pump doesn’t get overloaded. However, if the bypass valve is opened wide, the temperature of the pump body tends to rise