Bicycle Inner Tube Valve Stem Types

Schrader presta woods dunlop schrader.

Bicycle inner tube valve stem types.

The outer valve stem is manufactured in various lengths for different applications and has a. The rim hole for schrader valves is bigger than the hole for presta valves. There are three types of valve stems on bicycles schrader presta and woods dunlop. 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 inner tubes have two major types of valves. Valve length and valve extenders. Bicycle valve stem types. Shop for bike tire tubes in bike components.

A lock nut to secure the stem at the wheel rim and a valve cap may also be present. If you have a presta valve in a schrader hole use a rubber ring grommet in the hole available at bike shops to keep the presta valve from sliding around and damaging the tube or the valve itself. 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. A third rarer type of valve is the woods or dunlop style.

The valve stem is approximately 8mm 5 16 inch in diameter. Learn the difference between presta and schrader valve stems on bicycle tubes and how to use different pumps to inflate them. If you ve got deep section wheels you ll need bike inner tubes with longer valves to make sure that they protrude. Choosing between presta and schrader bicycle valve types i picked presta valves for the inner tubes for my next bicycle tour around the world.

It is also found on many bicycles. The main reason for this came down to keeping the strength of the wheels rim with the smaller diameter hole. The valve stem opens by unscrewing a knurled textured nut at the top. Unlike a schrader the system doesn t use a check valve it seals entirely based on pressure in the tube or tire.

The schrader or american type valve is common on cars and motorcycles. 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. Valve stem types l r. Finally keep an eye on the valve length.