Industrial valves refer to the valves which are widely used in the industrial process. There is no doubt that they have made great contributions to the development of the modern industry. And there is a large variety of the type available. All these types are manufactured to regulate or turn on and off the flow of the liquids or gases. In fact, materials including the plastic, metal or an exotic alloy are widely applied to manufacture various industrial valves on different service conditions. To be frank, selection of the proper valve is an important task for following performance. At this moment, a brief introduction to the various industrial valves is given as follows.
The ball, butterfly and plug valve are the valves which have a path of flow. The ball-shaped disc with a hole for ball valves, the cylindrical plug with a hole bored through for plug valves and wing-like disc for the butterfly valve are important in the entire guiding process. The flow of liquids or gases is allowed with the rotation of these internal mechanisms.
Gate valves and globe valves are also popular, which are generally used to shut the flow on and off immediately. As a result, the requirements on the leakage-proof should be ensured effectively. And the leakage would mainly caused by the sudden change of the inside pressure. Perhaps, some practical ways can be implemented. For example, the gate valves would adopt the wedge-design so as to avoid fluid hammer effects.
Besides, pinch valves and diaphragm valves are the valves which are commonly used in high purity applications. These two types are able to have the helpful flow path. The straight flow path or the flexible diaphragm would help to mechanically pinch a flexible membrane. The fluids with solids can be used in the pinch valves or diaphragm valves.
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