LC Series oval gear oil flow meter, the main type of positive displacement flow meters, is used to measure pressure in the pipeline closed under full pipe flow of the fluid flow. It has high accuracy, reliability, long life and wide range, small pressure loss, viscosity and good adaptation, is essentially unregulated measuring temperature, pressure change, and ease of installation. Petroleum products mainly used for measuring the cumulative flow, can also be used for other chemical solution (except the corrosive agents) measurement. Direct Reading of the flowmeter accumulated fluid-flow meters, is equipped with a pair of oval gear switched from the measurement chamber, sealed coupling (a small-caliber flowmeter high sensitivity magnetic coupling) and technical institutions