Double Diaphragm Pump Air Consumption (Maximum) 50 scfm Air Intake Connection Size 1 1/2 in Air Intake Connection Type NPT Check Seat Material Polyethylene Diaphragm Material Buna-N Feet of Head (Maximum) 289 ft Flow Rate (Maximum) 106 gpm Manifold Connection Single Port Media Discharge Connection Size 1 1/2 in Media Discharge Connection Type NPT Media Discharge Location Center Top Media Intake Connection Size 1 1/2 in Media Intake Connection Type NPT