Double Diaphragm Pump Air Consumption (Maximum) 16 scfm Air Intake Connection Size 3/8 in Air Intake Connection Type FNPT Check Seat Material Aluminum Diaphragm Material Buna-N Feet of Head (Maximum) 231 ft Flow Rate (Maximum) 12 gpm Manifold Connection Single Port Media Discharge Connection Size 1/2 in Media Discharge Connection Type NPT Media Discharge Location Center Top Media Intake Connection Size 1/2 in Media Intake Connection Type FNPT Media Intake Location Bottom Center