Air Operated Drum Pump Pump Package Type Metered Dispensing with Manual Shut-Off Air Inlet Size 1/4 in FNPT Air Outlet Size 1/4 in For Container Size 30 gal 55 gal For Container Type Drum Max Flow Rate 6 gpm Max Oil Flow 6 gpm Max Viscosity 600 cps Discharge Connection Type FNPT Discharge Tube Outlet ID 3/4 in Discharge Tube Outlet OD 1 in Min Air Pressure 45 psi Max Air Pressure 140 psi Ratio 3 1 Max Head - Pumps 25 ft Max Head Pressure 100 psi