Valve stem
From Free net encyclopedia
A valve stem is the port on a wheel that allows the tire to be pressurized. They are typically spring-loaded devices that admit air when the external pressure is greater than the internal tire pressure to allow filling.
Contents |
[edit]
Types of valve stems
[edit]
Schrader
The Schrader valve is used on both automobiles and bicycles.
[edit]
Presta
The Presta valve is thinner and is typically only found road bikes and more expensive bicycles because they can take more pressure(psi).
[edit]
Dunlop (or Woods)
Dunlop valves were once popular in Great Britain and Asia. Their bases are wider than Presta valves, but they can be pumped with Presta pumps.
[edit]