The VP series of two-stage rotary vane vacuum pumps are used to obtain a vacuum by pumping gas from a sealed container. They are extremely useful in refrigeration repair, medical apliances, printing machinery, vacuum packing, gas-analysis, and hot-forming plastics. See product photos for full specs. Features: Oil Anti Flow-Back Design - The gas inlet is specially designed to prevent oil form flowing back, preventing the container and hoses from being polluted Environmental Design - The tank has separating devices at the exhaust port to prevent oil spraying and to reduce pollution Alloy Aluminium Casing - Motor is made from allow casing which has good heat dissipation to keep the pump running efficiently and for a longer life. Easy start design -Starts easily even in cold temperatures Anti-Vibration - An electrometric coupling insert between the motor and module results in a extremely quiet and low vibration running condition.