FAQ

Operation method of the valve

1. Manual valve: When the handle is in a parallel position to the pipeline, the valve is in the open position; when it is at 90 degrees, the valve is in the closed position. Turning the handle clockwise closes the valve, while turning it counterclockwise opens the valve.
2. Worm gear driven valve: Identify using the indicator device installed on the upper part of the valve; turning the handle clockwise closes the valve, while turning it counterclockwise opens the valve. 3. Valves operated by pneumatic, electric, gas-liquid linkage, or hydraulic linkage: Operate according to the relevant actuator manual.

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Stone cave valve

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