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 materials into an attached 10- to 55-gallon drum.
Electric drum-top vacuum heads have an electric motor for connecting to an electric power source. They generate strong suction to draw materials into an attached 55-gallon drum.
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