The 316L STAINLESS STEEL reversible compressed air pump for liquid suction is a maintenance free system to recover spilled liquids, coolant, sludge, tramp oil, waste,water and other liquids using only compressed air. The compressed air system attaches easily to any closed head of a drum (30 or 55 US gallon, or 45 Imperial gallon or 205 liter drum). The reversible feature allows you to fill or empty the drum in under two minutes with the simple turn of a knob. The flow rate can be controlled either by a shut-off valve or regulator, or by the knob itself. Drum should have a nominal wall thickness of 1.5mm (16 gauge) and in good condition to maintain integrity of system performance and safety. Using no electricity, these systems last and last, unlike many electrical units that wear out quickly in harsh industrial environments. A built in safety feature prevents overfilling and spills. The 316L Stainless Steel Drum Angel Model 35011S includes the Drum Angel unit, crevice tool, heavy duty skimmer tool, floor tool, two (2) straight plastic wands, metal wand for sure with heavy duty skimmer tool, 10’ of plastic hose with cuffs and drum adaptor with plastic tube. OPTIONAL all 316L stainless drum adaptor and tool available on request at extra cost.