Bicycle Inner Tube Valve Stem Types

A lock nut to secure the stem at the wheel rim and a valve cap may also be present.

Bicycle inner tube valve stem types.

Valve length and valve extenders. The valve stem is approximately 8mm 5 16 inch in diameter. Schrader presta woods dunlop schrader. The main reason for this came down to keeping the strength of the wheels rim with the smaller diameter hole.

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. 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. Visit us at https hostelshop. 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.

The rim hole for schrader valves is bigger than the hole for presta valves. Bicycle inner tubes have two major types of valves. Bicycle valve stem types. Choosing between presta and schrader bicycle valve types i picked presta valves for the inner tubes for my next bicycle tour around the world.

Valve stem types l r. Learn the difference between presta and schrader valve stems on bicycle tubes and how to use different pumps to inflate them. Buy products such as bell sports standard bicycle inner tube 26 x 1 75 2 25 35mm schrader valve at walmart and save. The outer valve stem is manufactured in various lengths for different applications and has a.

The longer valve stems also make inflating them easier. The schrader or american type valve is common on cars and motorcycles. It is also found on many bicycles. The valve stem opens by unscrewing a knurled textured nut at the top.

There are three types of valve stems on bicycles schrader presta and woods dunlop. 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. Unlike a schrader the system doesn t use a check valve it seals entirely based on pressure in the tube or tire. Finally keep an eye on the valve length.