Valve leaks are: stem leakage; gland leakage; flange gasket leakage. Common causes are: valve stem (valve shaft) wear, corrosion and peeling, pits and peeling off on the sealing surface; seal aging and leakage; gland bolts and flange connection bolts are loose. Increase and replace the sealing medium during maintenance; replace the new nut and readjust the position of the fastening bolt.

 

         No matter what kind of failure, if it is not repaired and maintained in time, it may cause waste of water resources, and even cause the entire system to be paralyzed. Therefore, the valve maintenance personnel must know the causes of the valve failure, be able to adjust and operate the valve proficiently and accurately, deal with various emergency failures in a timely and decisive manner, and ensure the normal operation of the water treatment pipeline network.