Quote History That is another dryer/regulator combo. I don't have that style personally, but I think it may have a filter inside. I could be wrong.
Realistically, if you are adding a dryer/regulator at each line drop you will be fine with Harbor Freight stuff unless you do a lot of sandblasting and painting. Those jobs require very dry air.
My personal setup has a water drop at every outlet. I have a dryer going into the system, then I have a second dryer at my hose reel I use for painting and sandblasting. I also use one of those small round "last chance" filters at my paint gun when I'm painting. Even with the water drops and 2 dryers I still get moisture in my air lines from time to time.