Diaphragm Pump, Inlet/Outlet 5/8 In. QC, Housing Material - Pumps Polypropylene, Max. Temp - Pumps 140 Degrees F, Max. Flow 2.0 gpm, Max. Pressure - Pumps 100 psi, Voltage - Pumps 24VDC, Diaphragm, Diaphragm Material Santoprene(R), Check Valve Viton(R), Pressure On 20 psi, Pressure Off 60 psi, Length (In.) 8.50, Width (In.) 4.00, Height (In.) 3.45, Prime in Feet 8, GPM @ 0 PSI 2.2, GPM @ 20 PSI 2.00, GPM @ 40 PSI 1.90, GPM @ 60 PSI 1.1, Motor Type Totally Enclosed Nonventilated, Self-Priming Yes