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What is a tyre valve? When should it be replaced? And how is it replaced? You can find the answer to all these questions in our article.
A tyre valve is a part of every tyre. It keeps the tyre sealed and prevents air from escaping. It is used to inject air into the tyre so that it is at the correct pressure.
A valve consists of three parts:
A valve must always have a cap to prevent air loss. So, if you find that one of your valves no longer has a cap, it is essential to replace it.
There are two situations in which valve replacement is necessary.
The valve replacement operation is always carried out when you fit a new tyre.
In the case of slow pressure loss, there may be porosity in the valve itself, or in the core inside the valve. This is not common, but it can happen.
This porosity compromises the seal, causes abnormal air loss and therefore requires the valve to be replaced, even if the tyre is still in good condition.
Why does this happen?
Part of the valve is made of rubber. As it ages, this material loses its sealing properties. This is why it is recommended that the valve is always changed when the tyre is replaced.
But it may become necessary to replace the valve before the tyre reaches the end of its life. For example, if you only make short trips in the city, the tyre wears little over the years, but the ageing of the valve rubber can make it porous over the years. In this case, the valve should be replaced before changing tyres to avoid pressure loss.
In any case, it is essential to check the pressure of your tyres regularly.
In this second case, have your tyre checked by a professional. If he finds that the valve is porous while the tyre is still in good condition, he will only replace the valve.
A little trick to find out if the valve is porous:
Make sure that the cap is screwed on tightly, then wiggle the valve back and forth. If you hear little noises of air escaping, it is porous.
You can also wet the valve with soapy water before wiggling it: if there is an air leak, it will show up as small bubbles.
The valve replacement procedure requires two things:
Without this knowledge and equipment, replacing a valve can be risky and then constitute a risk on the road. That's why we recommend that you take your tyre valve replacement to a professional. To find one near you, you can use our tool below: