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1 The valve is forbidden to be transported by hanging on the handwheel with a hook

2 Before the valve is used, both ends of the flow channel must be plugged with valve sleeves to prevent dust impurities from entering, and there must be plug sleeves to protect the sealing surface. Keep the valve dry and ventilated. When the valve is not used for a long time, the inner cavity of the valve should be cleaned. Clean, additionally coated with anti-rust oil to prevent rust.

3 Before the valve is installed, it is necessary to check whether there is any impurities in the valve cavity, and check whether the valve is open or closed.

4 The valve must be installed in the pipeline in a horizontal state, and must not be suspended, inclined, etc., and a bracket must be provided in the suspended position.

5 Each time the valve is opened and closed, the valve position indicator must be in the same position as described above.

6 When the valve needs maintenance in the pipeline, the valve should be in a half-open and half-closed state, and then withdraw for maintenance

7 During the use of the valve, check the tightness of the bolts and nuts, and stop when necessary.