Round door is a circular door for opening and closing the valve element, and with the axis of rotation, in order to achieve a fully open and fully closed valve. The throttle valve is mainly used to regulate the flow of medium and pressure in the pipeline. Large high temperature dampers are generally used in smoke ducts and gas pipelines. Widely used in power, hydraulic, petroleum, chemical, mining and other departments.

Features 1., convenient and rapid, fluid resistance is small, you can often operate; 2., simple structure, small size, light quality, easy maintenance; 3., good regulation performance.