Double Diaphragm Pump Air Consumption (Maximum) 18 scfm Air Intake Connection Size 1/4 in Air Intake Connection Type NPT Check Seat Material Acetal Diaphragm Material Hytrel Feet of Head (Maximum) 230 ft Flow Rate (Maximum) 11 gpm Manifold Connection Single Port Media Discharge Connection Size 3/8 in Media Discharge Connection Type NPTF Media Discharge Location Side Media Intake Connection Size 3/8 in Media Intake Connection Type NPT Media Intake Location Side