Pneumatic drum-top vacuum heads operate on a compressed-air supply, so they have no electric motor to burn out and no moving parts to wear out. They're commonly used in wet environments where an electric-powered vacuum could be hazardous. These vacuum heads generate strong suction to draw wet or dry materials into an attached 55-gallon drum.,Drum-top vacuum heads attach to a 55-gallon drum to suction wet or dry industrial materials into the drum for storage or disposal. They have no tank to empty or clean out, so they can be moved from drum to drum as needed. These vacuum heads are ideal for cleaning up chips, dust, debris, sludge, and large spills. They can also be used to transfer liquids from tanks and drain pits.Specifications:For Drum Capacity:55 galVacuum Air Flow:238 cfmStatic Pressure:200 inSound Level:95 dBVacuum Hose Dia.:2 inVacuum Hose Length:15 ftMinimum Air Compressor:50 hpAir Hose Dia.:3/4 inInlet Air Flow:200 cfmInlet Air Pressure:90 psiInlet Connection Gender:FemaleAir Inlet:3/4 in FNPTInlet Connection Type:ThreadedIncludes:(4) Liquid Shutoffs, (4) Venturi Powerheads, Deflector, Jumbo , Quad Head Line Connector, Tool Kit, Vacuum Hose, WandItem:Pneumatic Drum-Top Vacuum Head