The presta valve also called french valve fv or sclaverand valve is a valve commonly found in high pressure road style and some mountain bicycle inner tubes it comprises an outer valve stem and an inner valve body.
Bicycle tube valve types.
The schrader valve is the same valve that s used on car tires.
Most bikes come with wheels that use presta valved tubes.
A lock nut to secure the stem at the wheel rim and a valve cap may also be present.
Wider than a presta valve and typically the same circumference top to bottom.
Learn the difference between presta and schrader valve stems on bicycle tubes and how to use different pumps to inflate them.
The outer valve stem is manufactured in various lengths for different applications and has a.
So a bicycle tube with the schrader valve can be pumped up at your local gas station if no hand pump or co2 cartridge is available.
Bicycle inner tubes have two major types of valves.
With a deflated tube the valve may slide inside the rim making it difficult to attach the pump correctly.
Most of the time no choice or thought is involved.
The humble inner tube may be one of the simplest parts on your bike but with a wide range of sizes different valve types and a choice of materials choosing the right tube isn t necessarily as.
This is typically found in bicycle tubes on many road bikes and some mountain bikes.
Presta nuts can be used only on presta valves threaded all the way down to the tube.
Hand tighten the presta nut only and do not overtighten or you could pull the valve up far enough to puncture the tube.
The presta valve is on the left.
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 tubes with presta left and schrader right valves.
Inner tube valve types.
You can go bike touring with either bicycle valve stem types.
A third rarer type of valve is the woods or dunlop style.
A bicycle will simply come with wheels that are pre drilled for either presta or schrader valves.
These valves are quite narrow and have a screw at their valve tip.
Angelsimon getty images schrader.