The DOE oval gear, or oval wheel, positive-displacement flow meters are the OEM's preferred choice for measuring viscous, non-abrasive, clean liquids such as lubricating and hydraulic oils, petroleum, grease, pastes, diesel fuels, ink, chemicals, solvents and resins. This compact flow meter uses 2 precision-machined oval gears which allow for a specific volume of liquid to pass through the meter with each rotation. These gears enable the DOE to precisely measure liquid flow over a very wide viscosity range. As this is designed to be an OEM product, minimum order quantities will apply.