A single-vent valve with a connector is connected to the exhaust gas recovery pipeline, and there is an exhaust fan; in other words, the pressure inside the pipeline is negative
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The design pressure of the single-vent valve is 1700 Pa; if there is negative pressure in the connecting pipeline, will this reduce the operating pressure of the breathing valve? If a negative pressure is felt, it’s equivalent to an upward pulling force; if it decreases, what’s the best way to address that?
If the back pressure is negative, it will reduce the operating capacity of the breathing valve; there is no solution for this issue – the only option is to replace it with a pilot-operated breathing valve
Thank you. I’ve now added a nut as a separator between the two flanges, and placed a rain cover on top; this allows the absorption tube to absorb the gases that escape
Is the pressure in the piping regulated using atmospheric pressure? In that case, you need to consider the type of medium being used; if it is a flammable gas, it could potentially lead to combustion or explosion. This is my personal opinion for reference only.