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Fully welded ball valve

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The fully welded ball valve seat cavity is the most contaminated area of the pipeline valve. In order to ensure the freedom of movement of the valve seat, it should be cleaned once a year, and the well should regularly check the tightness of the valve through the sewage nozzle. The valves of the auxiliary gas main line are often seldom adjusted. At least once a year, they should be opened and closed and injected with an appropriate amount of grease to prevent the ball and valve seat from gluing and the sub-grinding between the valve ball and the valve seat.

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