Teach you how to test the tightness of the tyre valve

As we all know,  tyre valves are related to the safety of the entire vehicle. Because its main material is rubber . Wear and aging are inevitable. When wear and aging affect the tyre valve's tightness, it must be replaced immediately. Here's how to test the tightness of the tyre valve.

The first method is to scribing, this method is very simple, only need scribing . The line is drawn on the working surface of the tyre valve, and it is separated by a certain distance. After scribing , use the tire valve which you want matches to rotate back and forth on the base. If the line marked above is broken, the sealing of the tyre valve is good.

The second method is to smear oil and work on the same way as the scribing method. Smear oil on the work surface. If there is no interruption at the end, the sealing of the tyre valve is good.

The third method is compressed air. It need to use tools to increase the air pressure in the tire to a certain extent, there is no problem of the sealability as long as there is no pressure drop in about ten seconds.

The above three methods can effectively check the sealing of the valve and hope to help everyone.