May I ask whether the breather valve on the nitrogen-sealed storage tank is required to be unidirectional or bidirectional?
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May I ask whether the breather valve on the nitrogen-sealed storage tank is required to be unidirectional or bidirectional?
The nitrogen-sealed breather valves we saw on site are all bidirectional, gravity-operated breather valves
What I have seen is a one-way outward discharge: nitrogen is added to the tank when the pressure is low, and the material is discharged when the pressure is high. If the material in the tank is a pollutant, it needs to be discharged to a safe area.
There are unidirectional and bidirectional types; generally, design institutes provide data sheets for these.