GPI Mechanical Fuel Meters meter no-nonsense accuracy,and economically adapt to any pump for a complete, affordable fuel-transfer system in flow range of 4 to 20 GPM (15 to 75 LPM). *3-digit display Reads in Gallons,not liters as pictured *Max 50 PSIG/3.4 bar. * 3/4-inch Inlet/Outlet * Internal Strainer is Quickly Accessible for Easy Maintenance * Compact, Lightweight Housing of Cast Aluminum * Includes Field Calibration * Use with Gasoline (Alcohol Blends E15), Diesel Fuel (Biodiesel Blends B20) and Kerosene * 2-Year Warranty