[Data] Usual press work

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Points on Labor Safety/Machine Safety It cannot be said that "double valves are safe." Continuing operations with one side malfunctioning is the same as operating with a single valve, which increases the risk of "pinch accidents."

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Is it really safe because it's a double valve? It is safer than a single valve, but a double valve only has two valve bodies inside. Even if one valve fails, it will still operate when power is restored (the press will continue to operate). Scene content: Inside the double valve, the two valve bodies repeatedly open and close almost simultaneously. If one side does not close when the valve is powered off (failure), the valve body on the functioning side will close, allowing the secondary side air to be exhausted, thus stopping the press. However, even if one side of the double valve is in a failed state, it will operate again when power is restored. Air leakage occurs from the valve's exhaust port, but this "failure indication" is difficult to notice. Points on labor safety/machine safety: It cannot be said that "double valves are safe." Continuing operations with one side failed increases the risk of "pinch accidents," just like operating with a single valve.