Rotary Vane Pump, Inlet/Outlet NPTF (In.) half in, - Filter Strainer, Max. Flow (GPH) 260 gph, Min. Flow Rate (GPH) 228 gph, Relief Pressure Max. (PSI) 250 psi, Max. Pressure (PSI) 250 psi, Stainless Steel Body Material, External Relief Not Required, By-Pass Yes, Carbonator Clamp Style Mounting, Max. Temp. (F) 158 Degrees F, Built-In Relief Valve, Relief Valve PSI Setting 200 psi, 303 Stainless Steel Shaft, GPH of Water @ 50 PSI 243 gph, GPH of Water @ two hundred PSI 232 gphMPN:115B240F31BA 250