Rotary Vane Pump, Inlet/Outlet NPTF (In.) 3/8 in, one hundred Mesh Filter Strainer, Max. Flow (GPH) 25 gph, Min. Flow Rate (GPH) 19 gph, Relief Pressure Max. (PSI) 250 psi, Max. Pressure (PSI) 250 psi, Brass 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 27 gph, GPH of Water @ 2 hundred PSI 21 gph, GPH of Water @ 250 PSI 19 gph Ideal to be used with carbonated, deionized, or distilled water and reasonably competitive liquids, this PROCON tremendous displacement rotary vane pump runs quietly, has low vibration and pulsation characteristics, and is practically maintenance-free. Model can manage many liquids with low lubricating trends at relatively excessive pressures. Flow stays fixed over complete stress range while metal-to-metal touch is eliminated, leading to low beginning torque. Pump is well suited with fire-resistant fluids, hydraulic oil, lubricants, coolants, insecticides, and soap. Can even be used in dispensers, espresso machines, sprayers, filtration and water purification processes, team-cleaning and car-washing machines, pressure boosters, atomizing/misting humidification systems, movement systems, laboratory pumps, pilot plants, boiler feeds, textile machines, and fireside jockey pumps. Warning: This product can divulge you to chemical compounds adding Lead which is known to the State of California to set off most cancers and birth defects or other reproductive damage additional info go to PROCON 111A025F11CA 250