N5100020G-A Double Diaphragm Pump, Air Intake Connection Size 1/4 in, Air Intake Connection Type Barbed, Check Seat Material Viton, Diaphragm Material Viton, Flow Rate (Maximum) 2.5 gpm, Manifold Connection Single Port, Media Discharge Connection Size 3/8 in, Media Discharge Connection Type Barbed, Media Intake Connection Size 3/8 in, Media Intake Connection Type Barbed, Media Temperature (Maximum) 120 Degrees F, Operating Pressure (Maximum) 75 psi, Priming Self-Priming, Pump Assembly Type Bolt