What Should I Do If The Fluorine-lined Gate Valve Is Not Closed Tightly?

In industrial production and chemical engineering, Lined Gate Valve is widely used because of its excellent corrosion resistance and sealing performance. However, sometimes we encounter the problem of fluorine-lined gate valves not closing tightly, which not only affects production efficiency, but also may bring safety hazards. So, what should we do when the fluorine-lined gate valve is not closed tightly?
1. Common reasons for fluorine-lined gate valves not closing tightly
Sealing surface damage
The sealing surface of the fluorine-lined gate valve is the key to ensuring its sealing performance. If the sealing surface is worn, corroded or scratched, the valve will not be able to close completely, resulting in a loose closing.
Poor matching of valve stem and valve disc
The matching of valve stem and valve disc is very important. If the valve stem is bent, the valve disc is stuck or the matching gap is too large, the valve cannot be closed normally.
Impurity blockage
Impurities such as particles, welding slag, etc. in the pipeline enter the valve and may get stuck between the valve disc and the sealing surface, affecting the sealing performance of the valve.
Improper operation
If the operator uses too much force or improper operation when opening and closing the valve, it may cause damage to the valve or damage to the sealing surface, resulting in loose closing.
Temperature changes
Temperature changes have a great impact on fluorine-lined materials. When the temperature changes suddenly, the fluorine-lined materials may expand or contract, affecting the sealing performance of the valve.
2. Solutions to the problem of fluorine-lined gate valves not closing tightly
Check and replace the sealing surface
If the sealing surface is found to be damaged, the damaged seal should be checked and replaced in time. Regular maintenance and inspection of the sealing surface can effectively extend the service life of the valve and ensure its sealing performance.
Correct the fit of the valve stem and valve disc
For the case of valve stem bending or valve disc stuck, it can be solved by adjusting or replacing the valve stem and valve disc. Ensuring a tight fit between the valve stem and valve disc and lubricating the valve stem regularly can improve the operating flexibility and sealing performance of the valve.
Clean impurities inside the valve
Regularly clean the pipes and valves, especially during installation and maintenance, and pay attention to prevent impurities from entering the valve. For impurities that have entered the valve, they can be solved by disassembly and cleaning.
Standardized operation methods
Train operators to ensure that they master the correct valve operation methods. Avoid too fast or too hard, especially when opening and closing the valve, operate slowly to reduce the impact and damage to the valve.
Control the use temperature
When using the fluorine-lined gate valve, try to maintain a stable temperature and avoid drastic temperature changes. If the process conditions permit, an insulation device can be installed on the outside of the valve to reduce the impact of temperature changes.
3. Measures to prevent the fluorine-lined gate valve from closing loosely
Choose excellent products
Choosing a fluorine-lined gate valve from a reliable supplier can effectively ensure the quality and performance of the valve and reduce the possibility of loose closing from the source.
Regular maintenance
Develop a scientific maintenance plan, regularly inspect and maintain the fluorine-lined gate valve, and promptly discover and solve potential problems, which can effectively extend the service life of the valve and improve its operational reliability.
Install a filter device
Installing a filter device in the pipeline system can effectively prevent impurities from entering the valve and reduce the impact of impurities on the valve.
Develop operating procedures
Develop detailed valve operating procedures and strictly implement them to ensure that operators operate the valve in the correct way and reduce valve damage caused by improper operation.
In short, although the problem of fluorine-lined gate valves not closing tightly is common, as long as the cause is understood and the corresponding solution is taken, it can be effectively solved to ensure the normal operation of the valve.