1. The opening and closing direction of the soft-sealed gate valve
should always be closed clockwise. 2. In order to facilitate the opening and closing operation of one person, the maximum opening and closing torque should be 240N-m under the condition of pipeline work pressure. 3. Since the pneumatic valves in the pipe network are often opened and closed manually, the opening and closing revolutions should not be too many, even large-diameter valves should be within 200-600 revolutions. 4. If the soft-sealed gate valve is buried deep, and the distance between the operating mechanism and the display panel is ≥1.5m from the ground, there should be an extension rod facility, and it should be fixed firmly so that people can observe and operate from the ground. That is to say, the valve opening and closing operation in the pipeline network is not suitable for downhole operation. 5. The opening and closing operation end of the soft-sealed gate valve should be a square tenon with standardized dimensions and face the ground, so that people can directly operate it from the ground. Valves with discs are not suitable for underground pipe networks.
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