Vacuum Pump 1>Supreme quality 2>Ultra-igh suction capacity 3>Preventing from conuter-flow of vacuum pump oil 4>Safe,reliable Vacuum Pump: ModelVP162VP240VP336VP500VP670VP1500VP4000pump suction capacity 162L/min240L/Min336l/Min500L/Min670L/Min1500L/Min4000L/Minpump Ult-pressure2X10-4Torrfeaturepreventing from conuter-flow of vacuum pump oil, safety and reliable Explanation:VP162, VP:vacuum pump, ...