pressurize the tank with an air connection after closing the appropriate valves and then drain will evacuate into your waste oil tank

Outlet: 1 1/4

Hand Operated Drum Pump (1 Gallon Per 6 Strokes)

Push-to-Connect Male Swivel Elbow - 5/16"OD x 1/4"MNPT (Pack of 10)

S-168ADP: Universal blow gun adapter

Wolflube DEF Kit – 110V – For Totes – with Manual Nozzle + Hose + Digital Meter + Suc. Valve SHOP PRESS pressurize the tank with anPUMP 505000 DEF Pump 110V 9 GPM BRACKET 560014 Tote Bracket HOSE 520200 16ft Dispensing Hose + 4ft Suc. Hose METER 505002 Digital Meter NOZZLE 505004 Manual Plastic Nozzle SUCTION VALVE 501501 Stainless Steel Suction Valve