Industrial-duty, oilless air blower designed for pressure and vacuum use. The blower flows without pulsation at low noise levels and is dynamically balanced to eliminate vibration. It s also equipped with continuous duty TEFC motors, aluminum alloy impeller, mounting base, and housing. Suitable for pneumatic air tube conveying systems, vacuum cleaning systems, vacuum lifting, vacuum hold down, vacuum transport, bottle filling stations, printing presses, screen printing, air cushion tables, drying systems, weld fume extraction, textile machinery, dental equipment, waste and water fish pond aeration, aquarium aeration, aeration plating tanks, and air knife systems. For use with air and noncombustible, noncorrosive, nonexplosive gases.  Note: A vacuum or pressure relief valve (sold separately) is required for proper operation.