The 807C is a 3-wheel mechanical meter that is designed for transfer pumps with a 5 - 20 GPM flow rate. This particular meter has a 3/4 inch inlet and outlet. The Fill-Rite 807C Mechanical Flow Meter has a large & easy to view display. Flow ports can be arranged vertically or horizontally, it can handle fluid of any viscosity, & it's rated for Gasoline, Diesel, Kerosene, Mineral Spirits, Stoddard solvents and Heptane. This Fill-Rite UL/cUL listed pump provides durability and accuracy with practical pricing.