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 Santoprene 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