1. Oil is extracted by the vacuum ejector; it saves the troubles of repairing the pump or the motor.
2. It can be used to pump a variety of lubricants, gear oil, engine oil, gasoline, diesel oil, water, and neutral liquid.
3. Applying the patented automatic retraction design, it is unnecessary to raise and hold down the draining bowl manually for capturing and draining the oil.
4. Use a vacuum ejector to extract oil. Air pressure can be stored and used for draining.
5. Two major functions in one machine, saving workspace and equipment costs