![]() ![]() The tube would probably not deflate then, but the damaged valve would make it impossible to fill the tire in the future, which would require inner tube replacement. However, it is much more likely that a pebble or something similar could hit the valve and damage it. Even if there is no valve cap, the screw ensures that no air can escape even if a pebble flies into it. Presta valve has a small screw at the top. Although you have to be unlucky to have dirt blow out your inner tube, it’s not impossible. Their primary purpose is to protect the valve from the dirt, dust and other debris you might find on the road. However, they offer an extra layer of protection, so why not use them if you have them.Ĭontrary to popular belief, the valve cap doesn’t hold the air in the tube, that’s the job of the valve itself. Tire valve caps are not necessary to use. Tire valve caps are one of those things that when you look at them, you say, ‘I’m sure I can live without them.’ Well, they have solid reasons, which I will explain below. ![]() You might wonder why manufacturers would even put valve caps on if they are not necessary. So, by using valve caps, you extend the life of the valve. Their main purpose is to protect the valve from dirt and other debris on the road that could damage it. Here is what I found out.īike tire valve caps are not necessary to use, and many cyclists ride without them. I have wondered this before, so I decided to do a little research. ![]() Every cyclist looks at the tire valve caps at some point and asks himself what their purpose is and are they really necessary. ![]()
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