What Are The Causes Of Butterfly Valve Seat Damage

The valve seat of the butterfly valve is a very important part of the butterfly valve, which has played a crucial role in the butterfly valve, but if the valve seat is suddenly damaged, it will cause serious leakage and other hidden dangers. Today, the butterfly valve manufacturer will tell you what factors cause the butterfly valve seat damage of.

1. Valve seat processing quality problems, the processing process is not rigorous enough, resulting in cracks, pores and uneven hardness on the sealing ring.

2. Wrong butterfly valve selection or incorrect operation caused. Failure to correctly select the butterfly valve model according to the actual working conditions, causing the butterfly valve to be inconsistent with the working conditions, and the valve seat sealing ring was damaged.

3. The butterfly valve is installed randomly or poorly maintained, resulting in damage to the valve seat. The valve body and pipeline were not cleaned before installation of the butterfly valve, causing impurities in the pipeline to damage the valve seat of the butterfly valve. Furthermore, the butterfly valve was not maintained in time, which kept the valve in an unhealthy state and damaged the seat sealing ring prematurely.

4. The chemical corrosion of the medium, the medium around the valve seat sealing ring does not produce current, the medium directly chemically reacts with the valve seat, corroding the valve seat.

5. Erosion of the medium in the pipeline, the valve seat sealing ring of the butterfly valve is located inside the pipeline, and the valve seat is continuously eroded. These media have suspended particles, and some are corrosive. Over time, the valve seat is in this way Under the erosion of the medium, the sealing surface will be destroyed.

6. Mechanical damage, every time the butterfly plate is opened and closed, it will rub against the valve seat, and the damage to the sealing surface will become more and more serious with the passage of time.

7. Electrochemical corrosion, the contact between the sealing surfaces, the contact between the sealing ring and the closing body and the valve body, the concentration difference of the medium, the oxygen concentration difference, etc., will cause a potential difference, electrochemical corrosion will occur, and the valve seat of the anode side will be sealed. The ring is corroded.

8. Fatigue damage, the valve seat has its own service life, especially the valve seat of the soft sealing butterfly valve, which has a limited service life. In long-term use, it is easy to age, cracks and delamination on the sealing surface, resulting in changes in sealing performance difference.

The above is the knowledge shared by butterfly valve manufacturers. I hope it will be helpful to you. If you want to know more, please contact us as soon as possible.