Rotary Vane Pump Body Material Stainless Steel Inlet/Outlet 1 in FNPT Min Flow (GPM) 8.8 Max Flow (GPM) 8.8 Relief Pressure Max (PSI) No relief Valve Max Pressure (PSI) 290 External Relief No By-Pass No Flange Mounting Max Temp (F) 158 Degrees Vane Material Graphite Stainless Steel Shaft