I have a strange sounding idea. I want to have an extra compressed air tank in my system. I have a bunch of tanks at this moment to choose from. This way, I could run air hungry tools like breakers, etc, intermittently but longer.
So far, so good, and nothing complicated. I have a whole bunch of tanks right now, and thought to do something nice for my shop and have an extra tank.
Examples of tanks I have are:(Tank with "QT-15" lettering on left)
However, I also realize that with a big extra tank, it will take so much longer for the air system to come up to pressure. This will be my wasted money, as people will be waiting longer to use compressed air.
So, I thought, can I have a valve, that would not fill the tank, until system pressure reached 120 PSI. And then it would shut off again if the pressure ever falls to below 90 PSI.
To use the accumulator tank to supply air, another pipe would be used with a check valve.
This setup makes sense to me, as1) I would get the system to reach pressure quickly and 2) I would eventually get a supply of air in the accumulator, without ever dropping the system pressure below 90 PSI.
I do realize that I can accomplish what I want, with a electric pressure switch and a normally open pneumatic valve. But I thought, perhaps, there is a purely pneumatic valve that does this? What would it be called?