Double Diaphragm Pump Air Intake Connection Size 1/2 in Air Intake Connection Type FNPT Check Seat Material PTFE Diaphragm Material PTFE Feet of Head (Maximum) 260 ft Flow Rate (Maximum) 177 gpm Manifold Connection Single Port Media Discharge Connection Size 2 in Media Discharge Connection Type Flange Media Intake Connection Size 2 in Media Intake Connection Type Flange Media Temperature (Maximum) 220 Degrees F Operating Pressure (Maximum) 100 psi Solid Diameter (Maximum) 0.25 in