Standard Pack = 1 piece(s). Pump Type = Metallic ; Maximum Flow Rate (GPM) = 45 ; Maximum Working Pressure = 125 PSI ; Air Inlet Size = 1/2 inch ; Housing Type = Aluminum ; Ball Material = Buna-N ; Housing Type = Aluminum ; Inlet/Outlet NPT = 1 ; Diaphragm Material = Buna-N ; Height = 12-23/32 inch ; Width = 10-1/4 inch ; Length = 13 inch ;