Diaphragm Pump Inlet/Outlet 3/8 in FNPT Housing Material - Pumps Nylon Max Temp - Pumps 130 Degrees F Max Flow 1.1 gpm Max Pressure - Pumps 100 psi Voltage - Pumps 120V AC - Diaphragm Material Santoprene(R) Check Valve Viton(R) Pressure On 85 Pressure Off 100 Length (In.) 8.4 in Width (In.) 4.0 in Height (In.) 4.3 in Prime in Feet 6 GPM @ 0 PSI 1.1 gpm GPM @ 20 PSI 0.9 gpm GPM @ 40 PSI 0.83 gpm Motor Type - Self-Priming Yes Operates on Demand