The internal leakage of the valve with pressure sealing refers to the phenomenon that there is still a certain fluid leaking out through the sealing interface or other parts of the valve when the valve is closed. This internal leakage can have a negative impact on process operation and system performance and therefore needs to be addressed promptly. Here are some ways to deal with internal leaks.

1. Check the valve sealing interface: First of all, you need to carefully check the sealing interface of the valve, including the seat, valve disc and sealing ring. If any wear, corrosion or damage is found, replace the seal in time and ensure that the new seal meets the specifications.

2. Adjust valve pressure Internal leakage problems may be caused by insufficient valve pressure. The sealing performance can be improved by increasing the pressure of the valve. The specific adjustment method can be determined according to the actual situation, which can generally be achieved by adjusting the opening degree of the valve of the import and export pipelines.

3. Check valve operation: Internal leakage of the valve may also be caused by improper operation of the valve. Before dealing with the problem of internal leakage, the operation of the valve should be checked to ensure that the valve is opened and closed normally, and there is no stuck or loose situation. If there is any abnormality, corresponding measures should be taken to repair or replace it.

4. Cleaning and lubrication: If the valve sealing surface has dirt or impurities, it may affect the sealing performance. The valve can be cleaned with an appropriate cleaning agent to ensure that the sealing surface is clean and free of dirt. At the same time, the sealing surface can also be properly lubricated to reduce friction and wear.

5. Use sealing packing: For some special valves, such as butterfly valves, you can use appropriate sealing packing to increase the sealing performance. The packing material should be resistant to corrosion and high temperature, and the appropriate packing type and sealing structure should be selected according to the actual working conditions.

6. Replace the valve: If the above methods can not solve the problem of internal leakage, or the valve has been used for a long time, serious wear, you can consider replacing the new valve. When selecting a new valve, the appropriate valve type and specification should be determined according to the process requirements and system parameters, and ensure that the new valve has good sealing performance.

7. Regular maintenance: In addition to the above treatment methods, regular maintenance and maintenance is also an important means to prevent internal leakage of the valve. A reasonable maintenance plan should be developed, including cleaning, lubrication, inspection and replacement of seals, to ensure the normal operation and sealing performance of the valve.

In short, the treatment of internal leakage in valves with pressure sealing requires a combination of factors, including sealing interface, pressure adjustment, valve operation, cleaning and lubrication, filler selection, valve replacement and regular maintenance. According to the specific situation to take the appropriate measures, can effectively solve the problem of internal leakage, to ensure the normal operation of the valve and the stable performance of the system.

Get more knowledge about What to Look for When Choosing an hot tapping machine Manufacturer please refer to aoguang sandwich valve：https://www.pipelinehottapping.com