Double Diaphragm Pump, Air Consumption (Maximum) 20 scfm, Air Intake Connection Size 1/4 in, Air Intake Connection Type NPT, Check Seat Material Polypropylene, Diaphragm Material Santoprene, Feet of Head (Maximum) 289 ft, Flow Rate (Maximum) 13.1 gpm, Manifold Connection Multiport, Media Discharge Connection Size 1/2 in, Media Discharge Connection Type NPTF, Media Discharge Location Center, Side, Top, Media Intake Connection Size 1/2 in, Media Intake Connection Type NPTF