Air Operated Drum Pump Pump Package Type Unmetered Dispensing with Automatic Shut-Off Air Inlet Size 1/4 in MNPT Air Outlet Size 1/4 in For Container Size 275 gal For Container Type Tote Max Flow Rate 15 gpm Max Oil Flow 7 gpm @ 100 cps Max Viscosity 300 cps Discharge Connection Type Hose Barb Discharge Tube Outlet ID 3/4 in Discharge Tube Outlet OD 1 1/8 in Min Air Pressure 40 psi Max Air Pressure 40 psi Max Head - Pumps 17 ft Max Head Pressure 7.4 psi