Can the nitrogen seal be replaced by the following solution instead of a nitrogen seal valve?
Thread Content
It has been suggested that single-inlet valves and single-exhaust valves be used in place of the nitrogen inlet and nitrogen pressure relief valves, with exhaled air being directed to the exhaust system while nitrogen is drawn in; a pressure reducing valve could be installed on the nitrogen main line. Is this a viable approach? Why?
Doing this seems not to be possible; there might be a continuous supply of nitrogen, leading to pressure release.
The self-acting valve can close tightly and has a leakage rating. It seems to be a breathing valve, but there isn’t one.
If the breather valve leaks, then the nitrogen seal on the storage tank will escape, right?
I think it’s possible; I’m not sure if anyone has done this. Have those who say that a breathing valve leaking will result in a continuous supply of nitrogen considered the possibility that even if a self-acting control valve is connected directly to the storage tank, a leaking breathing valve could still lead to the same outcome?