Presta schrader and woods valves are each most common on particular types of bikes but they function largely the same and are frequently but not always interchangeable on wheel rims.
Bicycle tube valve stem types.
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The valve stem opens by unscrewing a knurled textured nut at the top.
Bicycle valve stem types from experience i know that the one main drawback to choosing presta is that sourcing new inner tubes may be nigh on impossible in certain parts of the world.
Learn the difference between presta and schrader valve stems on bicycle tubes and how to use different pumps to inflate them.
Finally keep an eye on the valve length.
A third rarer type of valve is the woods or dunlop style.
Now that said it is extremely difficult to get any parts of a high quality in some parts of the world anyway.
Valve length and valve extenders.