Double Diaphragm Pump Air Consumption (Maximum) 20 scfm Air Intake Connection Size 1/4 in Air Intake Connection Type Flange Check Seat Material PVDF Diaphragm Material PTFE Feet of Head (Maximum) 231 ft Flow Rate (Maximum) 23 gpm Manifold Connection Single Port Media Discharge Connection Size 1 in Media Discharge Connection Type Flange Media Discharge Location Center Top Media Intake Connection Size 1 in Media Intake Connection Type Flange Media Intake Location Bottom Center