Many people may think that there are many reasons for the leakage of pneumatic ball valves. The main leakage places of pneumatic ball valves are stem leakage, midway seal leakage, and loosening of inner seal ring of pneumatic ball valves. There are many reasons for leakage. Today's small production should summarize the leakage of pneumatic ball valve caused by sealing.

First, the sealing property of liquid. The main reason for the leakage of pneumatic ball valve is that the properties of medium are different. For example, the test results may be different under the same conditions. This may lead to leakage.

Second, pneumatic seal. The seal of gas is related to the viscous of gas and pneumatic molecules, and the leakage of gas is also related to the length of pipeline and the viscous of gas. When we do the gas seal test, the medium must use water to play a good sealing role.

Thirdly, the sealing of leakage passage. Under the condition that the elastic strain force of most metal materials in our country is low, if we want to achieve the sealed state, we need to put forward higher requirements for the compressive force of metal materials, that is, the compressive force of materials should exceed its elasticity.