Rubber Valve

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Courtesy of AUDI OF AMERICA, LLC

Valve body
Valve Insert
Valve cap

1. The Valve Body

The rubber valve for tubeless tires is designed to seal air-tight in the hole in the rim. The elastic material of the rubber body presses itself tightly into the hole in the rim.

When valves with threaded metal feet are used, a rubber seal is used to seal the rim. The area around the edge of the valve hole is a sealing area. Therefore, they must be free of rust, dirt and damage.

2. The Valve Insert

The valve insert has the most important role in the valve: it seals and makes it possible to regulate the tire pressure. The small plate seal on the valve core can only do its job when it is free of impurities, dirt and moisture.

3. Valve Cap

A valve cap must always be screwed onto the valves. It prevents dirt from getting into the valve. Dirt which may be in the valve would reach the seal of the valve plate when the tire is inflated and cause a leak.

The valve must be replaced every time a new tire is fitted.

If the vehicle is driven without caps on the valves, there is the danger that dirt may get into the valve. This leads to gradual loss of air and therefore lead to the destruction of the tire.

Separation of shell and rubber
Wide circumferential furrows in the area of the bead
Disintegrated tread

NOTE:

CAUTION! An air-tight seal is ensured only if the valve cap is secured tightly.

CAUTION:

Do not use valve caps made of aluminum on a valve body made of steel.