Double Diaphragm Pump Air Intake Connection Size 3/4 in Air Intake Connection Type NPT Check Seat Material 316 Stainless Steel Diaphragm Material Santoprene Feet of Head (Maximum) 289 ft Flow Rate (Maximum) 237 gpm Manifold Connection Single Port Media Discharge Connection Size 3 in Media Discharge Connection Type NPTF Media Intake Connection Size 3 in Media Intake Connection Type NPTF Media Temperature (Maximum) 225 Degrees F Operating Pressure (Maximum) 10 psi