Diaphragm Pump, Operating Pressure (Maximum) 45 psi, Diaphragm Chamber Design 5, Diaphragm Material Santoprene, Check Valve Material FKM, Discharge Connection Size 1/2 in, Discharge Connection Type FNPT, Flow Rate (Maximum) 4 gpm, Housing Material Polypropylene, Intake Connection Size 1/2 in, Intake Connection Type FNPT, Nameplate Voltage 12V DC, Priming Self-Priming, Pump Operation Type Electric, Pressure Switch No, Standards NSF Certified, Feet of Head (Maximum) 103.8 ft. This item has been restricted from sale in the following state (s): []