First I researched what could happen wrong…. The drum could always explode and the idea in general. But it was really a concept I never tried and I do not think I followed the directions? LINK My theory was: The worse case when filling the drum with 100 psi air…. would be the chemical would shoot out way to fast and probably foam way to much. (But this might be extremely bad logic?)
I am also pumping ultra concentrated tri-foam. There is a hose going into the tank (which you can not see).