Air Operated Diaphragm Pump, Metallic Double Diaphragm, Air Inlet 1/4 In, Flow 21 GPM, Max Flow 15 CFM, Max Flow 28 GPM, Max Operating PSI 100, Inlet 3/4 In FNPT, Outlet 3/4 In FNPT, Port Type Single, Max Dia Solids 1/16 In, Max Temp 225 F, EPDM Ball Material, 316 Stainless Steel Body Material, 316 Stainless Steel Check Seat Material, Santoprene Diaphragm Material, Self Priming Dry 18 Ft, Self Priming Wet 28 Ft