Double Diaphragm Pump, Air Consumption (Maximum) 100 scfm, Air Intake Connection Size 1/2 in, Air Intake Connection Type FNPT, Check Seat Material Aluminum, Diaphragm Material Santoprene, Feet of Head (Maximum) 289 ft, Flow Rate (Maximum) 81 gpm, Manifold Connection Single Port, Media Discharge Connection Size 1 1/2 in, Media Discharge Connection Type NPTF, Media Discharge Location Center, Media Intake Connection Size 1 1/2 in, Media Intake Connection Type FNPT, Media Intake Location Bottom