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Flange Gate Valve

Flange gate valve is a gate valve with a flange connection method, which is the most common connection method. ‌Flange gate valves are stable and reliable when used in pipelines, so flange gate valves are often used on high-pressure pipelines. The opening and closing part of the flange gate valve is the gate, and the movement direction of the gate is perpendicular to the direction of the fluid, which means that the gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. Flange gate valves have two sealing surfaces. The most commonly used mode is the wedge sealing surface. The wedge angle varies with the valve parameters, usually 50 degrees. When the medium temperature is not high, the wedge angle is 2 degrees and 52 minutes. The design and manufacturing of flange gate valves follow specific national standards, such as GB/T12237-2007, while the flange connection follows standards such as JB/T79-94 and GB9113-2000.

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