16/04/2026
Swing check valve is a type of valve that automatically opens and closes by relying on the flow of medium. It is mainly used to prevent the backflow of fluid medium in pipeline systems and ensure the safe operation of the system. The core principle is that when the medium flows forward, the fluid pressure pushes the valve disc to rotate and open; When the flow rate decreases or reverse flow occurs, the valve disc automatically closes under its own weight and reverse pressure, preventing the medium from flowing back.
This type of valve is widely used in industrial systems such as petroleum, chemical, power, water supply and drainage, and heating, especially suitable for working conditions with large diameters, low flow rates, and clean media. Due to its channel design being close to a straight line and low fluid resistance, it has a relatively low impact on system pressure drop when fully open.
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