Double Diaphragm Pump, Air Intake Connection Size 3/8 in, Air Intake Connection Type FNPT, Check Seat Material Santoprene, Diaphragm Material Santoprene, Flow Rate (Maximum) 12 gpm, Manifold Connection Single Port, Media Discharge Connection Size 1/2 in, Media Intake Connection Size 1/2 in, Media Intake Connection Type FNPT, Media Temperature (Maximum) 300 Degrees F, Operating Pressure (Maximum) 125 psi, Solid Diameter (Maximum) 0.06 in, Valve Material Santoprene