1. Check whether the wedge gate valve is properly closed, whether there are foreign matters on the sealing surface, and whether there is internal leakage on the sealing surface. If allowed, the inspection result of the wedge gate valve is to switch, otherwise the sealing surface is damaged and requires maintenance.
If there is a fault, it is necessary to maintain the wedge gate valve. Wedge gate valves have a safe discharge port that allows cleaning of components, replacement of damaged packing and gaskets, modification of sealing surfaces, and readjustment of discharge pressure. The value is less than 1. Double the pressure. After maintenance, the wedge gate valve cannot resume operation until it passes the hydrostatic test.
Wedge gate valves should be regularly inspected and maintained, and corrosion should be strictly prevented. The equipment should always be in good condition.
4. Fill the drain with the wedge gate valve and verify that the cover is loose and has been pressed again. Wedge gate valves have sealing rings, but it is not recommended to use pressure instead of packing.
5. If the intermediate flange leaks, check whether the fixing bolts are loose. If not, tighten them evenly again; "If leakage, gasket damage, aging, or even the sealing surface may be damaged, wedge gate valves should be repaired and replaced with gaskets, or the sealing surface should be repaired.".
