Diaphragm Pump Operating Pressure (Maximum) 40 psi Air Intake Connection Type Barbed Diaphragm Chamber Design 2 Diaphragm Material Santoprene Check Valve Material Viton Discharge Connection Size 3/8 in Discharge Connection Type Barbed Flow Rate (Maximum) 1 gpm Housing Material Polypropylene Intake Connection Size 3/8 in Intake Connection Type Hose Nameplate Voltage 12V DC Priming Self-Priming Pump Operation Type Electric Pressure Switch Yes Standards CE NSF