Flanged connection swing check valve
Category： Check valve series
Summary： Check valve, also known as check valve or check valve, belongs to the automatic valve, its main function is to prevent the medium backflow, prevent the pump and drive motor from reversing, and the discharge of the container medium.
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Check valve main characteristics and uses
Check valve,also known as check valve or check valve, belongs to the automatic valve, its main function is to prevent the medium backflow, prevent the pump and drive motor from reversing, and the discharge of the container medium. The disc (opening and closing part) of the check valve is opened under the action of fluid pressure, and the fluid flows from the inlet side to the outlet side, when the pressure of the inlet side is lower than the outlet side, the valve disc automatically closes under the action of fluid pressure difference, its own gravity and other factors to prevent the medium from flowing back. When the check valve is closed, water hammer pressure will be generated in the pipeline, which will lead to damage to the valve, pipeline or equipment in severe cases, especially large diameter or high pressure pipelines, so it should attract the attention of the selector.
Check valvescan be divided into several types such as lifting check valves, swing check valves, butterfly check valves and diaphragm check valves according to the structure, and bottom valves also belong to the check valve category.
The structure of the lifting check valve is generally similar to the globe valve, the disc along the vertical center line of the valve body for lifting movement, reliable action, but the flow resistance is large, suitable for smaller caliber occasions, lifting check valve can be divided into straight-through and vertical two, straight-through lifting check valve can generally only be installed on the horizontal pipeline, and the vertical lifting check valveshould generally be installed on the vertical pipeline, vertical lifting check valve its flow resistance is smaller than the straight-through type.
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Address: 517 Fucang Road, Bancang Industrial Park, Zigong City
