MECHANICAL FLOW METER (FIL-FR901)Flow Meters Series 900 operates at 6 to 40 GPM (23 to 151 LPM), with accuracy of ± 2%. The easy reset register indicates product use up to 999.9 gallons or 9,999 liters. The master totalizer registers up to 9,999,999 gallons/liters. Large, easy to read numbers Measure fluids at temperatures up to 150°F (63°C) and pressures up to 50 PSI (3.4 bars). Quick reset knob Flexible flow ports can be positioned vertically or horizontally UL/cUL listed Gallon or liter reading 1 or 1-1/2 ports Teflonor nickel coatings increase selection of compatible fluids BSP threads Applications: Designed for metering diesel fuel, gasoline, kerosene, mineral spirits, stoddard solvent and heptane