'Rotary Vane Pump, Inlet/Outlet NPTF (In.) 3/8, Max. Flow (GPH) 111, Min. Flow Rate (GPH) 99, Relief Pressure Max. (PSI) 260, Max. Pressure (PSI) 260, Brass Body Material, External Relief Not Required, By-Pass Yes, Carbonator Clamp Style Mounting, Max. Temp. (F) 158, Built-In Relief Valve, Relief Valve PSI Setting 125, Stainless Steel Shaft, GPH of Water @ 50 PSI 109, GPH of Water @ 200 PSI 101, GPH of Water @ 250 PSI 99, 111 GPH, Compliance NSF'