I have a cold water unit and have always wondered what guys do if there is no where to attach a water hose for the water source. I assume its a water tank of some sort. So my question is for a 4gpm 3750psi unit what size tank should be sufficient for graffiti removal? Also what tank configurations are available? And lastly does the water have to pumped into the washer or can it just somehow be gravity fed into it?
