Pail washer (PW-4) is most commonly used pail washer series which the small factories used for removing old dried up paint from different types and sizes of gallon pails and lids. Thus it has been a good solution washing the containers. Like others, the main features of PW-4 Series are corrosion resistant, high pressure pumps and spray nozzles that can confiscate even the most difficult residues from the containers. 
This system allowed you to wash your pails with a simple switch to “set it and forget it”. This also kept harmful fumes away from you and your workers who were directly exposed previously. PW-4 also gave them the liberty to use other solvents if need be since the unit was not limited to using Acetone only. This pail washer will cut your labor time in half and accomplish more work in less time. Thus pail washer PW-4 is considered to be a good and affordable processing tool.