How To Deal With The Problem That The Hard Seal Butterfly Valve Is Not Closed Tightly?

Generally speaking, a hard-sealed butterfly valve that is properly installed and put into use is tightly closed. If the hard-sealed butterfly valve is not tightly closed, what is the specific reason? The following will introduce it in detail and teach you how to deal with these problems.

Not tightly closed when just put into use

If the hard-sealed butterfly valve that has just been installed and put into use is not tightly closed, then you should consider whether it is installed correctly. If the installation is wrong, when the hard-sealed butterfly valve is running, it will cause serious damage to the sealing surface, resulting in poor sealing performance and loose closing. In this case, the user should check the installation instructions in detail, check which step is wrong in the installation, and then deal with it according to the relevant situation.

Not tightly closed after using for some time

If the hard-sealed butterfly valve is not tightly closed after the user has used it for a period of time, it is generally due to damage to the sealing surface. In addition to the above-mentioned improper installation or maintenance, another reason for the damage to the sealing surface is erosion by the medium.

The hard-sealed butterfly valve is installed in the pipeline. If there are a large number of solid particles in the pipeline medium, it will cause friction with the sealing surface. After a period of time, the sealing surface will naturally be eroded and damaged, and the situation of not closing tightly will appear.

Another point is that if the flow rate of the medium reaches a certain level, even if there are few solid particles in the medium, it will cause erosion and damage to the sealing surface, especially when the medium is in a state of high-speed movement, it is easy to cause local damage to the sealing surface.

If the medium is mixed and partially vaporized, the bubbles generated will also impact the sealing surface and damage the sealing surface. If the medium is corrosive, the damage to the sealing surface will be more serious.

For the sealing surface of the hard-sealed butterfly valve eroded by the medium, resulting in poor closure, we can only replace the sealing surface to solve it. This also reminds us that during normal use, the hard-sealed butterfly valve should be regularly maintained to increase its service life.