Fill-Rite designed for metering diesel fuel, gasoline, kerosene, mineral spirits, stoddard solvent and heptane. Flow Meters Series 900 operates at 6 to 40 GPM, with accuracy of ± 2%. The easy reset register indicates product use up to 999.9 gallons. The master totalizer registers up to 9,999,999 gallons. 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