This style of meter is available for up to 3” pipe sizes. It is ideal for extremely low flows and high-viscosity fluids. The Sur-Flo Industrial Oval Gear Meter – Model IOG – is a modular flow meter design: economical yet highly accurate and rugged. The model IOG is designed for a variety of chemical applications including petroleum-based fluids, water solutions and any other liquid compatible with the materials of construction. Due to the rugged nature of this particular flow-measurement technology, the Industrial Oval Gear Meter can be used in a number of applications where conventional meters are not acceptable. Whether the liquid being measured is highly viscous or highly corrosive, the oval gear meter can handle it.