The cleaning solution is stored inside a drum to reduce fumes and solvent evaporation. Use these parts washers with solvent-based cleaning solutions that have a flash point above 105° F. Turn on the pump and solution will flow to the flexible metal spigot. Washers have a filter that removes large particles to keep the solution cleaner longer. A fusible link closes the cover in the event of a fire. Note: Do not use with flammable liquids.