Liquidynamics Fluid Extractor, 8 Gallon, Air Pressure To Empty - 24224RLiquidynamics Fluid Extractor, 8 Gallon, Air Pressure To Empty 24224R Model #: WBB2349479 MPN #: 24224R This compact fluid extractor has an eight gallon tank capacity with a suction capacity of up to 5 gallons. Vacuum charge is easily monitored by a vacuum gauge while tank level is visible via a sight gauge. Once the maximum fluid level is reached, used fluid can be quickly emptied by pressurizing the tank with approximately 10 PSI of shop air.