Valve Meaning in Cycling

A valve is the small metal tube on a bicycle wheel used to add or release air from the tire. Most bicycles use one of two types: the thick Schrader valve found on cars or the thin Presta valve common on racing bikes. The valve holds a internal core that keeps the air pressure trapped inside until you manually open it. Proper air pressure is vital for comfort, speed, and preventing flat tires during your ride. For example, a cyclist will use a floor pump to check their valve pressure before every weekend journey. Presta valves feature a small nut on top that you must unscrew before you can add any air. I find that many beginners are intimidated by the thin Presta style, but they are actually very reliable. If your valve leaks, you can often just replace the tiny internal core instead of the whole tube. Always remember to put the plastic cap back on to keep dirt and mud out of the mechanism. It is a tiny part that plays a massive role in how your bike feels.