Why do normally closed high-temperature metal hard-sealed ball valves tend to get stuck or fail to open fully when opened?

2010-12-07View Original

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Why do normally closed high-temperature metal hard-sealed ball valves tend to get stuck or fail to open fully when opened?

Reply #22010-12-07

The valve is deformed or blocked by particulate impurities

Reply #32010-12-07

Because polysilicon tends to seep into the valve chamber when the valve operates, and once a certain amount accumulates, it can lock the ball in place, preventing the actuator from opening. Therefore, such valves require a self-cleaning function

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