NQ347TC ball valve is suitable for industries such as chemical, petroleum, natural gas, metallurgy, as well as natural gas pipelines containing hydrogen sulfide, impurities, and severe corrosion. The wear-resistant and corrosion-resistant ball valve has related problems such as large contact area between the valve seat sealing ring and the ball core, insufficient sensitivity of the switch, and low utilization rate of upper and lower valve stem materials. Shuangde Valve has designed a new type of wear-resistant and corrosion-resistant ball valve. By improving the design and overcoming defects during casting, the goal of energy conservation, material saving, and environmental protection has been achieved. The technical parameters, characteristics, and core component of the valve seat sealing structure of this ball valve were introduced, which improved the sealing quality and reliability of the ball valve It has been well validated in practical operation, achieving the expected effect and having wide promotion and usage value. The NQ347TC ball valve is wear-resistant, corrosion-resistant, easy to start, and has self-cleaning function. It is suitable for pipeline systems that transport slurry or liquids with impurities.