Flowmeter, Mechanical Flowmeter, Connection Size 3/4 In., Connection Type FNPT, Max. Pressure 50 psi, Flow Range 5 to 20 gpm, GPM Max. 40, Length 8 In., Width 6 In., Height 6 In., Resetable Cumulative Totalizer 100 Gallons3-wheel mechanical fuel transfer meter, 5-20 gpm. Aluminum construction. +/- 1% accuracy rating. Designed for gasoline, diesel, biodiesel up to B20, E15 and kerosene. 3/4 inlet/outlet. UL/cUL, ATEX, CE. Two-year warranty.