A15 EXP and A15 EXPW explosion-proof vacuums enable personnel to safely clean up hazardous materials such as paint and fuel. Both machines meet requirements for use in Class I, Group D, and Class II, Groups F and G, environments. Powered by compressed air for use where electricity is unavailable or undesirable. Pneumatic, explosion-proof vacuums are constructed entirely of 304 stainless steel and are equipped with conductive accessories to eliminate percussion arcing and static charge. A15 EXP vacuum is used for collecting dry materials, while A15 EXPW is used for collecting liquid spills and other wet materials. Nilfisk-Advance America, Malvern, Pa.