As I said in my last column, after years, indeed, of trying to keep air in pressure tanks, our industry figured out that the air was being eaten by the water.
In my last couple of columns I have reviewed the construction, sizes and unique fittings for typical hydro pneumatic tanks still made today, that were popular before about 1955.
In my first article on this subject, I talked about sizes of tanks, why they are needed in a hydropnuematic system and a variety of tappings that we don’t see in modern tanks.