Air Operated Diaphragm Pump, Air Intake Connection Size 3/8 in, Air Intake Connection Type FNPT, Check Seat Material Buna-N, Diaphragm Material Buna-N, Flow Rate (Maximum) 20 gpm, Manifold Connection NPT, Media Discharge Connection Size 1 1/2 in, Media Intake Connection Size 1 1/2 in, Media Temperature (Maximum) 200 Degrees F, Operating Pressure (Maximum) 85 psi, Solid Diameter (Maximum) 0.75 in, Valve Material Buna-N, Wetted Housing Material Aluminum, Standards Not Rated, Valve Type Flap