The AquaMetro VZO 20 RC 130/16 is a high-precision, mechanical ring piston oil meter designed for the accurate measurement of fuel oil consumption. Part of the renowned Contoil® series, this meter is ideal for monitoring heating oil (EL), diesel, kerosene, and other light mineral oils. Its robust construction and reliable ring piston principle ensure long-term stability and accuracy without the need for an external power supply. The VZO 20 is commonly used for consumption monitoring in burners, boilers, diesel engines, and generators, providing clear readings on its mechanical roller counter. Its compact design and female BSP thread connections allow for easy installation in various orientations.