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