Oil free vacuum pumpIncrease the pressure regulator, flow featuresDouble-pump head structure, and can easily select series (increasing pressure) or parallel (increased traffic) of the workVacuum pressure: 0-80kPa (adjustable)Maximum pressure: 20psiFlux: 20,000mL/min Power: 100VAVoltage: 220V AC/50Hz, 110V/60HzDimension: 292 x 180 x 155mmNet weight: 5.6kg