Trunnion ball valves have been widely used in the exploitation of oil, gas and minerals, refining and transportation systems. It can also be used for the production of chemicals, pharmaceuticals; hydroelectric, thermal energy and system producing nuclear energy, drainage systems, heating systems and gas systems in the city or in the industry. Ball, is widely used in irrigation and drainage systems or metallurgical production system, is one of the most important mechanical products that are related to the construction, defense, and everyday life with her. In the pipeline, ball valve trunnion can interrupt or connection means, such medium may be transported to a specific point as a process.
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