What if the upper and lower limits of the imported pneumatic lever butterfly valve are reversed?

6. Check the connection parts to ensure the tightness of the packing and the flexible rotation of the valve rod.

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Iron and steel is the product of the industrial revolution, which has facilitated our daily life and accelerated our development. From barbarism to civilization, it has an important driving force. The installation of pneumatic butterfly valves in iron and steel plants plays an important role in the operation of iron and steel plants

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