DN50-DN300 PN16 Swing single plate wafer check valve The swing check valve adopts a built-in rocker swing structure. All the opening and closing parts of the valve are installed inside the valve body, and do not penetrate the valve body, except for the sealing gasket and sealing ring for the middle flange. , There is no leakage point as a whole, preventing the possibility of valve leakage. The swing arm of the swing check valve adopts a spherical connection structure at the connection between the rocker arm and the valve flap, so that the valve flap has a certain degree of freedom within the range of 360 degrees, and there is an appropriate trace position compensation. Swing check valves have been widely used in many fields such as chemical industry, metallurgy, and pharmaceuticals.