' Rotary Vane Pump, Inlet/Outlet NPTF 1/2 In, 330 GPH, Max Pressure 200 PSI, Brass Construction, Without Filter Strainer, External Relief Required, External By-Pass Required, Carbonator Clamp Style Mounting, Max Temp 150 F, 303 Stainless Steel Shaft, GPH @; 50 PSI 331, @; 150 PSI 328, HP @; 50 PSI 1/3, @; 150 PSI 3/4, Min Flow 327 GPH, Max Flow 346 GPH '