How to solve the leakage and seepage of ball valve castings

In the industrial field, ball valve castings are a vital component in the pipeline system, and their sealing performance directly affects the safety and operating efficiency of the system. However, leakage and seepage problems are more common in ball valve castings, which not only lead to fluid loss and environmental pollution, but also may pose a serious threat to production safety.

Causes of leakage and seepage
Leakage and seepage of ball valve castings usually come from a variety of factors. The following is a detailed analysis of the main causes:
Damage to the sealing surface: During long-term use, the sealing surface of the ball valve may be damaged by wear, corrosion or scratches by external foreign objects, resulting in a significant decrease in sealing performance.
Aging of the gasket: As a key sealing element of the ball valve, the material and performance of the gasket have a direct impact on the sealing effect of the valve. Over time, the gasket may fail due to aging, hardening or deformation, which in turn causes leakage problems.
Loose fasteners: If the fasteners (such as bolts and nuts) of the ball valve are improperly installed or subjected to external forces such as vibration and impact for a long time, they may become loose, which will directly lead to sealing failure.
Poor installation quality: The installation quality of the ball valve is critical to its sealing performance. If the correct steps and specifications are not followed during the installation process, such as failure to properly adjust the valve stem position or not thoroughly cleaning the sealing surface, leakage may occur.
Improper operation: Improper operation methods, such as excessive force to open or close the valve, frequent operation, etc., may damage the sealing performance of the ball valve and cause leakage.

Solutions for leakage and seepage
For the leakage and seepage problems of ball valve castings, the following are some professional solutions to improve its sealing performance and extend its service life:
Inspect and replace the sealing surface:
Before any operation, close the ball valve and disconnect the upstream and downstream pipes.
Disassemble the valve and carefully check the condition of the sealing surface.
If the sealing surface is found to be worn, corroded or scratched, it should be repaired with a grinding tool or replaced with a new sealing surface.
Reassemble the valve and perform necessary commissioning and testing to ensure its normal operation.

Replace the gasket:
Similarly, close the ball valve and disconnect the upstream and downstream pipes.
Disassemble the valve and remove the old gasket.
Inspect the cleanliness and integrity of the gasket seat to ensure that no impurities remain.
Install a new gasket and ensure that it fits tightly against the sealing surface to improve the sealing effect.
Reassemble the valve and perform necessary commissioning and testing.
Tighten and check fasteners:
Use appropriate tools to check the tightness of fasteners (such as bolts and nuts).
If looseness is found, use a torque wrench to tighten according to the specified torque value to ensure the reliability of the connection.
Check the tightness of fasteners regularly to ensure that they are always within the specified torque range.
Improve installation quality:
Before installing the ball valve, ensure the cleanliness of the pipeline system to avoid impurities affecting the sealing performance.
Follow the correct installation steps and specifications, including correctly adjusting the valve stem position and thoroughly cleaning the sealing surface.
Use appropriate installation tools and equipment to ensure the accuracy and safety of the installation process, thereby reducing potential leakage risks.